Manchester United boss Mourinho is reportedly at loggerhads with Pogba behind the scenes, in rumours that has prompted talk of the midfielder joining Barcelona.
The Red Devils star is supposedly keen to leave Old Trafford behind amid his row with his manager.
But, speaking today, the Manchester United boss said: “The truth is we are together for two years and a couple of weeks and I’ve never been so happy with him as I am now, that’s the truth.
“I cannot demand more from him, I cannot ask more from him, he came here on a Monday, trained three days, I asked for his support for his contribution in an important match for us when the team had difficulties.
“He did it better and for more time than we could expect, when he says he did it for the fans and for the team is exactly what I want, is exactly what I demand from my players.
“He’s working well, playing well, he does for the fans, he does for the team and that’s what I want, to play for the team and I couldn’t be happier than what I am.”
Mourinho was speaking ahead of United’s trip to Brighton on Sunday.
And he also confirmed Paul Pogba would start and captain the side.
“For the next match, yes,” he added.
“For the next match Paul will be captain it will stay with Antonio Valencia.
“Last season I made Paul captain against Basel we thought he’s a young guy but a good personality, he was made in academy, normally a starting line-up player, so he has conditions to be captain in the future.
“But when Antonio comes back he will be the captain.”
Mourinho then opened up on United’s preparations for Brighton.
He said: “Looking to it, three months ago we lost there, we lost 1-0, great coach, Chris, good players, good team, beautiful stadium but difficult to play.
“They know how to play, they kept the same team, bought a few new players, the style is the same and the fact they lost the first match they are working for a reaction, to improve their game.
“So [it’s] a difficult match for us, but we are confident, the training was really really good all week.”
United are aiming for back to back wins, having beaten Leicester 2-1 last Friday.