The club are thought to be leading the race to sign Crystal Palace's highly-rated teenager Victor Moses, who is being sought by a number of Premier League clubs. Philippe Senderos has completed a loan move to Everton.
Arsenal are keeping an eye on Fulham defender Chris Smalling, and are believed to be one of a trio of clubs trailing Newcastle goalkeeper Fraser Forster. However, Arsene Wenger is now unlikely to sign a new striker this month.
Bolivian midfielder Samuel Galindo has signed for Arsenal, while Sol Campbell has completed a shock return to Arsenal. Philippe Senderos has agreed to join Everton until the end of the season.
Arsenal are thought to be one of four Premier League clubs who sent scouts to watch Racing Santander midfielder Sergio Canales. The club are also looking at Lyon midfielder Maxime Gonalons, regarded as one of the best young players in France.
Derby County are talking with Arsenal about signing French striker Gilles Sunu on loan for the rest of the season. Jack Wilshere could go to Newcastle or FC Twente on loan.
Villa and Birmingham have agreed a fee of around £3m for midfielder Craig Gardner. Meanwhile, the club have distanced themselves from reports linking them to Rangers striker Kris Boyd.
The club are reportedly tracking Spanish midfielder Sergio Canales and Sporting Gijon left-back Roberto Canella. Martin O'Neill is rumoured to be interested in bringing Jermaine Pennant back to the Premier League, while a £12m move for Kenwyne Jones is another possibility. But Graham Dorrans, another transfer target, will be staying at West Brom after he signed a new deal.
Meanwhile, Villa have rejected a bid from his old club Celtic for defender Curtis Davies, and have said they are not looking to sell out-of-favour left-back Nicky Shorey.
Nigel Reo-Coker could be on the way out, with Bolton, Blackburn, Hull and Wigan all reportedly interested in a £5m deal, while Habib Beye has been linked with a £1.8m move to Sunderland.
Birmingham have joined Aston Villa in the race to sign Rangers striker Kris Boyd. Celtic will demand £11m for winger Aiden McGeady, while Birmingham and Aston Villa are negotiating the transfer of Craig Gardner after agreeing a £3.5m fee.
Alex McLeish has also reportedly made an offer for Standard Liege striker Milan Jovanovic, who is wanted by Liverpool, while the club are believed to be preparing a third bid for Liverpool's Ryan Babel. McLeish could also battle Liverpool, Tottenham and West Ham for AC Milan's Klaas-Jan Huntelaar.
Also on the radar are Sunderland's Kenwyne Jones, Tottenham's Roman Pavlyuchenko and Austrian striker Marc Janko, who is available from Red Bull Salzburg for £6.5m. Sporting Gijon midfielder Michel has already arrived for £3m.
The club have expressed an interest in Panathanaikos winger Dimitris Salpigidis, former West Ham midfielder Sekou Baradji and Hull midfielder Stephen Hunt. Teenage midfielder Eddy Gnahore has signed from Manchester City.
Meanwhile, Gary McSheffrey wants to leave after struggling to feature this season, with Sheffield United expressing an interest in taking on the winger. Leicester are believed to be interested in signing defender Martin Taylor.
Blackburn are in talks with South Korea midfielder Ku Ja-cheol and may sign Monaco striker Eidur Gudjohnsen and Stuttgart midfielder Yildiray Basturk. In the other direction, Morten Gamst Pedersen has attracted the attention of Fenerbahce.
The club are looking to sign Villarreal's Uruguayan midfielder Sebastian Egruen on loan and have reportedly been watching Auxerre defender Kevin Malaga and Sedan centre-half Paul Baysse. Sam Allardyce has also admitted an interest in Middlesbrough winger Gary O'Neil and Bosnian midfielder Senijad Ibricic.
Allardyce is believed to be in talks with Feyernoord forward Andwele Slory over a loan deal and Algerian midfielder Amine Linganzi, who has been training at Ewood Park. Portsmouth's Nadir Belhadj could be another target.
A swap deal for Stoke's James Beattie that could see Jason Roberts moving in the other direction is in the pipeline. Out-of-favour Benni McCarthy will be allowed to leave, with West Ham the latest club to show an interest.
Striker Franco di Santo has extended his loan spell from Chelsea, while Elrio van Heerden has left Blackburn after making just two substitute appearances. The South African midfielder has joined Turkish club Sivasspor.
Manchester City winger Vladimir Weiss has joined on loan, with American midfielder Stuart Holden poised to join him. Bolton are also set to rival West Ham for the signature of Burnley defender Clarke Carlisle. The club want to buy Jamie O'Hara from Tottenham for £3m - but Fifa must first rule whether he can move again this season having just ended a loan spell at Portsmouth.
Owen Coyle admits he is interested in taking Arsenal's Jack Wilshere on loan, but has played down speculation linking him to Stoke defender Andy Wilkinson.
Aston Villa's Nigel Reo-Coker has also been linked with the club, but Newcastle have quashed rumours that their striker Andy Carroll may join Bolton. Chris Eagles and Tyrone Mears could join from Coyle's old club Burnley, as could striker David Nugent.
Real Madrid midfielder Guti and Barcelona striker Bojan Krkic may be available on loan, while the club have also been linked with Portuguese striker Nuno Gomes and Bosnian defender Safet Nadarevic.
Coyle is optimistic of keeping hold of defender Gary Cahill, while Hamburg have joined Marseille in the chase for striker Johan Elmander. Newcastle are close to signing out-of-favour defender Danny Shittu.
Burnley have completed the signing of Monaco striker Frederic Nimani. The France under-21 player will move on loan at first, with new manager Brian Laws then having the option to sign him permanently.
Burnley are in talks with Portsmouth over extending David Nugent's loan deal, although Bolton may also sneak in with a bid. Tottenham's Gareth Bale is a loan option, but Harry Redknapp will probably want to keep the Welshman with doubts remaining over the fitness of Benoit Assou-Ekotto.
Laws may also raid his old club Sheffield Wednesday with a £1.5m bid for their goalkeeper Lee Grant. The club could also sign Belgian international defensive midfielder Mark de Man from Germinal Beerschot.
The ghost of Owen Coyle still stalks the corridors at Turf Moor. The club's former manager risks infuriating fans further if, as reported, he makes bids for Tyrone Mears and Chris Eagles, and hijacks the club's loan move for Jack Wilshere of Arsenal.
The club are also believed to be preparing a £5m bid for Middlesbrough's Adam Johnson, and have been linked with Serbian international Nikola Zigic. A £36m move for Wolfsburg striker Edin Dzeko has been rumoured, with Chelsea hoping to beat AC Milan to the Bosnian striker's signature.
Manchester City and Tottenham are both in the hunt for Joe Cole, whose contract talks have stalled and who is available for free in the summer.
Chelsea are reportedly interested in signing Everton's Marouane Fellaini, while Racing Santander midfielder Sergio Canales and Benfica winger Angel di Maria are other potential signings.
Chelsea have made their first big move of the window by offering Atletico Madrid £30m for striker Sergio Agüero. The club could also move for Monaco midfielder Jerko Leko and Bayern Munich's Bastian Schweinsteiger, with Franck Ribery a long-term target. Juliano Belletti has been linked with a move to Flamengo.
Philippe Senderos has agreed a loan move from Arsenal. David Moyes has admitted his interest in AC Milan striker Klaas-Jan Huntelaar, and is in talks with Legia Warsaw over Slovak international goalkeeper Jan Mucha. Landon Donovan has already been signed on loan.
Leeds claim striker Jermaine Beckford has signed a pre-contract agreement with Everton and may move to Goodison in the summer, with David Moyes reportedly willing to sell James Vaughan.
Molde defender Knut Olav Rindaroy has arrived for a trial that could lead to a permanent move, as has Hungarian teenager Andras Gosztonyi. The club have agreed a deal with Malmo for 15-year-old defender Johan Hammar, while Everton are rumoured to be considering a £5m bid for Rennes defender Rod Fanni, who has played four times for France.
Bayern Munich are thought to be lining up Steven Pienaar as a potential replacement for Franck Ribery. Louis Saha could be on his way out of Goodison Park, with Arsenal potential bidders, while Marouane Fellaini is reported to have attracted the attention of Chelsea. Having agreed a deal to sell defender Lucas Neill to Galatasaray for a fee of around £800,000, striker Jo has followed him to Turkey.
Swiss striker Marco Streller is the latest name to be linked with Fulham, as Bobby Zamora continues to be linked with a shock return to West Ham. Other rumours involve Stoke's James Beattie, Egyptian Mido and Crystal Palace's Victor Moses.
A loan deal for Roma's Stefano Okaka appears to have fallen through over the player's injury, so Roy Hodgson could move for Hull striker Daniel Cousin instead.
Romanian striker Florin Costea has been linked with Fulham. Meanwhile, the club could also be preparing to steal Tottenham's Jamie O'Hara from under the noses of Portsmouth, where the 23 year-old is currently on loan. Panathanaikos winger Dimitris Salpigidis is another potential target.
Hodgson could also try and sign Spurs defender Alan Hutton to boost his defence, and may also be preparing a loan bid for Arsenal's Jack Wilshere. South Korean international Seol Ki-Hyeon has left the club. The winger has agreed to join Hong Kong side South China.
Egyptian striker Mido could sign for Hull, joining his ex-Zamalek team-mate Amr Zaki in joining the club. Hull are tracking Scunthorpe midfielder Michael O'Connor, and will try to sign Tottenham defender Kyle Naughton on loan.
Celtic are rumoured to be interested in signing midfielder Kevin Kilbane, who would cost around £400,000.
The club have quashed speculation that winger Stephen Hunt may be leaving, with Wolves understood to have lodged a £3.5m bid. If Hunt does leave Phil Brown may replace him with Derby winger Kris Commons, while a bid for Aston Villa's Nigel Reo-Coker is still a possibility.
Brown could bid for Hamilton Academicals midfielder James McArthur, but his attempt to sign Felipe Caicedo from Manchester City on loan has failed, while American youngster Freddy Adu has decided to move to Greek club Aris from Benfica. Caleb Folan and Daniel Cousin could both go on loan, while Nathan Doyle has moved to Barnsley for an undisclosed fee.
Rafa Benitez will have to dip into the kitty to sign Kenwyne Jones after Sunderland said they would not agree to a loan deal for the striker. The club are also keeping an eye on Valencia striker Nikola Zigic and AC Milan's Klaas-Jan Huntelaar.
Despite Steven Gerrard's denial that he is thinking of leaving, doubts over his future persist. Inter Milan, Real Madrid and Manchester City are all interested. Ryan Babel looks almost certain to leave Anfield after his Twitter outburst, with a £9m move to Birmingham looking most likely.
Serbian international Milan Jovanovic has also revealed that Liverpool are interested in signing him, while another transfer target, highly-rated Bordeaux striker Marouane Chamakh. is yet to make a decision on his future.
Rafa Benitez has clinched the signing of Argentina midfielder Maxi Rodriguez from Atletico Madrid on a free transfer. Andrea Dossena has signed for Napoli for a deal worth around £4.5m, and Andriy Voronin has ended his unhappy stay at Anfield by moving to Dinamo Moscow, who could also bid £7m for Yossi Benayoun.
Sources in Spain claim Manchester City has placed a £13.2m bid for Real Madrid's Fernando Gago. The Argentinian midfielder is looking for regular first-team football ahead of the World Cup. Roma right-back Marco Motta could also be the subject of a late bid.
The future of Robinho is still unclear. Santos are rumoured to be interested in taking him on loan, but Roberto Mancini has said he is keen to hold on to the Brazilian.
City have tested the mettle of West Ham's new owners, David Sullivan and David Gold, by offering £15m for midfielder Valon Behrami, and could move for Middlesbrough's Adam Johnson. Having signed Patrick Vieira on a six-month contract at Eastlands, Mancini has confirmed his interest in another ex-Arsenal player, Mathieu Flamini, currently at AC Milan.
Mancini could move for Joe Cole, who is out of contract with Chelsea at the end of the season, and go head-to-head with Manchester United for the signature of Napoli midfielder Marek Hamsik. However, Mancini has played down speculation over Argentina international left-back Cristian Ansaldi, and is not interested in signing Barcelona's Zlatan Ibrahimovic.
City have reportedly joined the chase for Crystal Palace's Victor Moses, and are also reported to be tracking Racing Santander's 18-year-old midfielder Sergio Canales. Danish defender Simon Kjaer, Juventus's Giorgio Chiellini, Hamburg defender Jerome Boateng and Portsmouth's Younes Kaboul are other potential targets.
Manchester United have reportedly joined Tottenham in the race for Toulouse midfielder Moussa Sissoko., and have expressed an interest in Atletico Madrid goalkeeper David de Gea.
Barcelona are preparing a bid for Wayne Rooney, according to reports, with Real Madrid also interested. Sir Alex is believed to be planning a clear-out, with Dimitar Berbatov, Nani, Anderson, Zoran Tosic and Nemanja Vidic all tipped to move on. Nani has been touted for a exit as part of an exchange deal for Benfica winger Angel di Maria, while Tosic could go to Cologne on loan.
Ben Foster is also available for £4m, according to reports, while Frederico Macheda could go to Real Zaragoza or Bologna on loan. Preston have signed striker Danny Welbeck until the end of the season.
Sir Alex Ferguson is looking for goalkeeping cover for Edwin van der Sar. Manuel Neuer of Schalke is the latest name to be linked with the club. Sebastian Frey and Hugo Lloris are also rumoured to be targets.
United are considering an £18m move for Porto defender Rolando, while the club could vie with City for the signing of Napoli midfielder Marek Hamsik. Ferguson could also swoop for Rangers defender Danny Wilson, Serbian defender Uros Cosic or Juventus defender Giorgio Chiellini. Swedish teenager Rasmus Lindgran and Norwegian defender Even Hovland will join the club on trial.
David James is on the verge of joining Stoke for the rest of the season. Portsmouth have apparently agreed to sign Romanian midfielder Razvan Cocis on a free transfer if the club's transfer embargo is lifted. Avram Grant could also make a loan move for Tottenham's Giovani dos Santos.
Kevin-Prince Boateng could be sold to ease Portsmouth's financial troubles, with Sunderland rumoured to be preparing a £5m bid. Nadir Belhadj could also leave, with Sporting Lisbon and Benfica said to be preparing bids.
Younes Kaboul could be the subject of an £8.8m bid by Lille. The Frenchman's former club Tottenham, Manchester City and Sunderland are also interested.
Grant has the option of recalling striker David Nugent from his loan spell at Burnley in the event that Pompey are barred from signing any new players. However, Aruna Dindane may be recalled by parent club Lens.
Stoke are believed to be on the verge of signing David James from Portsmouth. The 39 year-old will join until the end of the season, subject to a medical. The club are also thought to have bid £4m for Middlesbrough's Gary O'Neil, but Blackburn will fight for the midfielder's signature.
Stoke have also been linked with Kenwyne Jones and Emile Heskey as replacements for James Beattie, who may join Fulham. Dimitris Salpigidis, the Panathanaikos winger, has also been linked with the club.
Meanwhile, Pulis is rumoured to have entered the race for West Ham's Scott Parker, and could try and sign Barcelona prodigy Oriel Romeu on loan.
Forward Richard Cresswell has moved to Sheffield United for an undisclosed fee.
Steve Bruce has completed the signing of Matt Kilgallon from Sheffield United for a fee of around £2m and have been linked with Wigan's Maynor Figueroa, with reports suggesting Kieran Richardson may be offered as part of a swap deal.
Steve Bruce will reluctantly listen to offers for striker Kenwyne Jones, who has been linked with a £10m move to Liverpool. Paraguay striker Salvador Cabanas is an option to replace Jones if he leaves, while Bruce is also thought to be interested in Portsmouth midfielder Kevin-Prince Boateng and Aston Villa defender Habib Beye.
Middlesbrough's Adam Johnson could be heading to the Stadium of Light. Sunderland are also keeping tabs on Egyptian midfielder Shikabala. The club could bid for Younes Kaboul of Portsmouth, Alan Hutton and David Bentley of Spurs, and Coventry goalkeeper Keiren Westwood.
Bolo Zenden has fuelled speculation that he may leave after he told Dutch media he wants to move to PSV Eindhoven.
With the club struggling to sell striker Roman Pavlyuchenko , Robbie Keane could be the man to go instead. Tottenham could make a late move for Palermo defender Simon Kjaer, while the agent of Juventus defender Giorgio Chiellini is believed to be talking to Tottenham over a possible move.
Inter Milan have been linked with a £10m move for midfielder Jermaine Jenas that could involve Sulley Muntari heading in the oppostite direction. West Ham are reportedly interested in Robbie Keane, while Tottenham are believed to be one of a trio of clubs trailing Newcastle goalkeeper Fraser Forster.
Spurs could make surprise moves for Younes Kaboul and Bordeaux right-back Mathieu Chalmé. West Ham are the latest club to have been linked with Alan Hutton, while Mexican Giovani dos Santos could be on the way out, with reports suggesting Galatasaray and Portsmouth are lining up a deal.
AC MIlan striker Klaas-Jan Huntelaar, Chelsea's Joe Cole, Crystal Palace striker Victor Moses, Monaco's Eidur Gudjohnsen, Sporting Lisbon's Miguel Veloso, Peterborough captain George Boyd and Wigan's Maynor Figueroa have all been linked with the club. However, Brazilian club Internacional now claim midfielder Sandro will not join Tottenham this transfer window.
West Ham United
Benni McCarthy is on the verge of joining from Blackburn for around £2.5m, according to reports. James Beattie could join him in a £3m deal from Stoke. West Ham have failed to land Ruud van Nistelrooy, who has decided to join Hamburg, but Burnley defender Clarke Carlisle has emerged as a target, although Bolton are also reputed to be interested.
Fulham's Bobby Zamora, Tottenham pair Alan Hutton and Robbie Keane, Monaco's Eidur Gudjohnsen, AC Milan's Klaas-Jan Huntelaar, Portuguese veteran Nuno Gomes, Fiorentina's Adrian Mutu, Belarus striker Sergey Kornilenko, Robert Huth of Stoke, Belgian winger Geoffrey Hairemans and Tours striker Olivier Giroud are other potential targets.
West Ham have reportedly put a £15m price tag on midfielder Scott Parker in an attempt to deter Liverpool, Tottenham and Stoke. Catania, Chievo and Parma are all reportedly interested in midfielder Luis Jimenez. However, Alessandro Diamanti, the club's 26-year-old striker, has dismissed reports linking him with a move to AC Milan.
Manchester City have tested the mettle of West Ham's new owners, David Sullivan and David Gold, by offering £15m for midfielder Valon Behrami.
Villarreal's Marco Ruben will travel to Wigan after the two clubs agreed a fee of around £7m for the striker. Gary Caldwell has joined Wigan in a deal thought to be worth around £1m, while Ivory Coast defender Steven Gohouri has signed until the end of the season.
The club could bring Jason Roberts back from Blackburn with a £1m bid, and are one of a number of sides reportedly interested in signing Nigel Reo-Coker from Aston Villa for around £5m.
A move for Mallorca forward Aritz Aduriz that could see Hugo Rodallega moving in the opposite direction is also on the cards, while Roberto Martinez is rumoured to be lining up a £4.5m bid for Sporting Gijon left-back Roberto Canella, a £4m move for Genk's Brazilian defender Joao Carlos and a £3m bid for Leicester striker Matty Fryatt.
The club have already completed the loan signing of Serbian international goalkeeper Vladimir Stojkovic, but Celtic have rebuffed an approach for striker Scott McDonald.
FC Copenhagen are interested in signing out-of-favour defender Erik Edman, Maynor Figueroa has attracted the attention of Sunderland, Oliver Kapo has completed a loan move to French side Boulogne, and Daniel de Ridder has joined Israeli side Hapoel Tel Aviv.
Wolves have completed loan deals for Charleroi midfielder Adlene Guedioura and Belgian international Geoffrey Mujangi-Bia, and may bid for Portsmouth striker Tommy Smith. The club are believed to have made a bid of £6.5m for Middlesbrough's highly-rated winger Adam Johnson, but Chelsea are also monitoring the situation.
Hull winger Stephen Hunt could move to Wolves, with the two clubs understood to be nearing agreement on a £3m deal, but Mick McCarthy will need special Premier League dispensation to take Tottenham's Jamie O'Hara on loan.
McCarthy is also interested in Derby's Kris Commons, Guingamp midfielder Richard Soumah and Aston Villa's Craig Gardner. However, the club's attempt to take Toulouse winger Fodé Mansaré on trial appears to have stalled.
Neil Collins has been sold to Preston for £750,000, while Richard Stearman could be a Liverpool target.