Mainoo injury update

The Academy product was an option to come into the side for the game at Aston Villa, with Casemiro suspended, but sustained the injury in training on Saturday.

"He got an injury in the last training," the boss told Sky Sports, before the 2-1 defeat. "After training, he went to the doctor. He got something in his calf.

"We are going to assess but he is out of this game.

"Of course [it is bad timing], not just for the team but for him to have this problem. These are reminders that we need to focus on everything we can control and leave the rest to the destiny.

"He is going to be fine in the few weeks, I think, I don't know. Let's focus on the players that we have and are ready to play."

Manuel Ugarte came in for Casemiro, lining up in midfield alongside skipper Bruno Fernandes.

It was the Uruguay international's first start since the defeat at Brentford in September.

Lisandro Martinez also had a turn in the middle, after Fernandes suffered an injury that forced his withdrawal at the break. 

Both players are likely to be ruled out of the Boxing Day clash with Newcastle United at Old Trafford, according to Amorim.

The boss suggested Mainoo may be back quicker than Fernandes but Casemiro should be available for Friday, of course, as his ban was only for one fixture.