Roy Keane has admitted he has a "personal" problem with Jose Mourinho but thinks he was a good appointment for Manchester United.
Mourinho was announced as Louis van Gaal's successor on Friday after agreeing a three-year deal with the Red Devils.
It brought an end to months of speculation regarding the manager's position at Old Trafford and the majority of fans are happy to see a world-class coach replace the unpopular Dutchman.
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But while no one doubts Mourinho's credentials, critics are still adamant that he will be unable to reintroduce the fast and exciting football that fans grew used to under Sir Alex Ferguson.
Indeed, most of his previous teams have been infamously defensive while there is also a serious concern for Manchester United's young hopefuls as Mourinho's record for blooding youth is poor, to say the least.
And now Keane, a former United captain and a club legend, has dealt him another blow after admitting he finds the Portuguese coach "really irritating".
"He is not my cup of tea," Keane told ITV. "I found him really irritating when I coached against him, but that is just a personal thing."
'He's a winner'
However, Keane certainly knows a winner when he sees one and readily admits that Mourinho is the perfect choice for his former club. Having failed to qualify for the Champions League, he has backed the former Chelsea manager to take the Red Devils back to the top.
He continued: "Working at Manchester United is all about winning and his CV will tell you he is a winner. He was always going to be a good option when United didn't qualify for the Champions League.
"He was available, fantastic CV and it seems like a good fit, but maybe he is not for me."