Soccer: New Ipswich manager Roy Keane has begun his tenure at Portman Road by questioning the achievements of his former Manchester United team-mates.

The ex-Sunderland boss, who quit the Stadium of Light last December, returned to football on Thursday when he was unveiled as the Tractor Boys' replacement for the sacked Jim Magilton.

Keane will take charge of his first game on Saturday when Ipswich travel to Championship play-off hopefuls Cardiff.

And the former Republic of Ireland international has opened his career in Suffolk in characteristically honest fashion by insisting former United team-mates Steve Bruce and Mark Hughes have yet to become 'successful' managers.

The respective Wigan and Manchester City leaders are often heralded among the Premier League's best, but Keane disagrees, saying: "Until an ex-team-mate of mine from '94 goes on and really achieves something, then I would not agree about them being a successful manager.

"You need a bit more than some of those managers have achieved yet.

"Who are the good managers you are talking about? Sparky (Hughes) and Brucie have not won a trophy have they?

"They have potential and Steve Bruce has had a good season. But Steve Bruce has been manager how many years?

"Sparky has done a brilliant job at Blackburn but is facing different challenges at Man City. We are all facing different challenges."