Neil Lennon has made the first move to bring Robbie Keane back to Celtic.
The new Hoops boss is working on a number of transfer deals, with the unsettled Spurs striker a priority.
Keane scored 16 goals in 19 games on loan from Tottenham last season and Bhoys assistant Johan Mjallby confirmed that Lennon had re-opened talks to bring Keane back to Glasgow.
"Has Neil been speaking to Robbie? Definitely," Mjallby revealed. "I'd be delighted if a deal was worked out.
"I don't know Tottenham's thinking when it comes to Robbie. I have not been monitoring his situation.
"He did really well for us last season. He is out of our reach when it comes to buying him but a loan would be perfect for us. I don't know if Robbie would like to do it or not.
"Neil only signed as manager three or four weeks ago but as soon as he knew he was going to sign, I am sure he was in contact with Robbie."
Lennon is hoping to sell Georgios Samaras and Marco Fortune but a straight transfer for Keane is out of Celtic's price range.
Aston Villa and Birmingham City are both monitoring Keane's situation at Spurs with Harry Redknapp looking to add another striker to his squad.
Keane is under contract at Spurs until 2013 but has no intention of spending the time as a bit part player.
Celtic would guarentee Keane first team football and a genuine prospect of winning the trophies that have been absent from his career.
The club captaincy could also be on offer, with his wife Claudine yesterday officially signing up for a Glasgow-based model agency.
On the park, Celtic have added Bosman signings Charlie Mulgrew and Cha Du-Ri to their squad for the new season, with Lennon hopeful of further additions before next week's four-match trip to North America.
Adding firepower to the existing squad is a priority as Mjallby explained: "We'd like to get a striker in, there's no secret about that.
"But there's no point in signing players just for the sake of it. We have strikers we know can score goals.
"You'd be lucky to find another Robbie. The only way we could do that is maybe find someone on loan -- a quality player who is going to give us goals. I still think we can attract that kind of player.
"We'd like to have the players as soon as possible but it's not that easy."