Manchester United midfielder Paul Pogba has told MUTV that Chelsea are "one of the best teams in the world" ahead of Sunday's game at Stamford Bridge.
Pogba, who scored twice for United in a 4-1 home win over Fenerbahce in the Europa League on Thursday, said he was relishing the chance to face Chelsea despite the fixture coming at the end of a gruelling week that began with Monday's 0-0 draw at Liverpool.
"Those games, playing against Chelsea and Liverpool, I think we play football for that," Pogba said. "You have to enjoy those games. We will be playing against one of the best teams in the world so we try to win. It's not going to be easy but that's football and that's what we love."
The busy schedule has meant Mourinho has rotated players, with Michael Carrick impressively stepping in as Pogba's midfield partner against Fenerbahce.
The France midfielder said: "A few players haven't played a lot like [Matteo] Darmian and Michael. We played [against Fenerbahce] like it was the normal team, which is great.
"That's what we need because there are a lot of games coming up so if you switch one player that player has to be ready and that's what happened."
Jesse Lingard was also on target against Fenerbahce, scoring United's fourth with a fine finish, and he said: "I think our confidence is very high now and we'll prepare for the next couple of days for the big game on Sunday.
"I enjoyed it last time when I was there [in February] and it was nice to be on the scoresheet. We drew [1-1] though , so hopefully we can get the win this time.
"We know it's going to be a tough game against Chelsea but we are mentally prepared for that. We have the confidence now to go on and win every game."