Roy Keane has defended Jose Mourinho's man-management after Paul Pogba opened up on his relationship with the former Manchester United boss.
The Portuguese coach, now at Tottenham, left United in 2018 before being replaced by Ole Gunnar Solskjaer.
Mourinho won the Carabao Cup, Community Shield and Europa League in just over two years with the Manchester club.
However, the Spurs boss fell out with some key figures during his time at Old Trafford, something Pogba touched upon in a recent interview.
"What I have now with Ole is different, he wouldn't go against the players," the French midfielder told Sky Sports.
"He wouldn't go against the players. Maybe Ole wouldn't pick them, but it's not like he puts them on the side like they don't exist anymore.
"That's the difference between Mourinho and Ole.
"Once I had a great relationship with Mourinho, everybody saw that, and the next day you don't know what happened.
"That's the strange thing I had with Mourinho and I cannot explain to you because even I don't know. So, yeah."
Former United captain Keane defended Mourinho's man-management and insisted it was "their job" to upset players.
Speaking on Sky Sports, the Irishman said: “If I’m going to start comparing Ole and Mourinho’s personalities, it’s chalk and cheese. But I tell you what, I don’t mind the look of Mourinho’s CV.
"Everyone talks about managers upsetting players - that’s your job.
"Managers used to upset me, you put that to the side. You still play for Man United, I’ve been there with managers.
“That’s man-management, managers are entitled to make mistakes.
"If Mourinho was sitting here, I’m sure he’d admit he got it wrong with Pogba on certain occasions like all the great managers did, but I played under great managers: Brian Clough, Alex Ferguson, they made mistakes but sometimes you have to just get on with it.
"Pogba hasn’t been there 12 months, he’s been there three or four years and they’ve not exactly been competing to win the big trophies.
Manchester United are in the semi-finals of the Europa League after Edinson Cavani's volley helped the Reds complete a 4-0 aggregate win over Granada and set up a last four clash against Roma.
It's back to Premier League action this weekend when Burnley visit Old Trafford on Sunday.
MEN Sport will bring you all the build-up to and reaction from every United match. You can have it all delivered straight to your inbox by signing up to our daily newsletter. Just put your email address in the sign-up box at the top of this article, or simply follow this link. It's free and only takes a few seconds.
"When Man United signed Pogba, it wasn’t to be playing in the Europa League and to be trying to win the league. He’s part of the problem, he’s out there playing - he’s come for big money with a big reputation.
"In his interviews he’s saying he’s come here to win trophies, well, do it, do it against Man City in the League Cup, Leicester away.”