Martin O'Neill: Factfile
Born: Kilrea, Co Derry, March 1, 1952
Played For: Distillery, Nottingham Forest, Norwich, Manchester City, Notts County, Northern Ireland
Playing Honours: 2 European Cups, 1 League title, 1 League Cup (Nottingham Forest)
Managed: Grantham Town, Wycombe, Norwich, Leicester, Celtic, Aston Villa
Managerial honours: 2 League Cups (Leicester), 3 SPL titles, 3 Scottish Cups, 1 Scottish League Cup (Celtic)
Steve Guppy: The winger was working as a labourer and playing part-time for Wycombe when O'Neill arrived. After a spell with Port Vale, he followed the manager to Leicester and Celtic and even won an England cap.
Neil Lennon: The Northern Irishman was plucked from Crewe to Leicester by O'Neill, and enjoyed four good years with the club before making the same move to Celtic, where he spent seven illustrious seasons. Now caretaker manager at Parkhead.
Alan Thompson: The midfielder's career had stalled at Aston Villa before Celtic shelled out £2.75m for him in 2000. He was integral to the Glasgow club's revival and played in the UEFA Cup final defeat to Porto in 2003
John Carew: O'Neill managed to offload the troubled Milan Baros and bring in Norwegian frontman Carew. who has chipped in with a succession of vital goals in his three seasons at Villa Park.
Richard Dunne/James Collins: Last summer, when Manchester City shelled out £22m for Joleon Lescott , O'Neill spent £5m each on Richard Dunne and James Collins and the new signings have proven a formidable centre-half pairing.