He should also shake up the rest of his team and I would go with James Milner and Georginio Wijnaldum in midfield, with Virgil van Dijk not needed in defence for a tie that is already won. United were 2-0 down at Selhurst Park against a Crystal Palace side who had out muscled and out fought the Red Devils for the first half and the early minutes of the second half.
As for the fans who missed Matic's magical victor, they got to Euston without problem only to find their train back to Manchester was delayed by 50 minutes.
The United midfielder gave the ball away with a long attempted pass before Andros Townsend gave Palace a 1-0 half-time lead at Selhurst Park.
"Fantastic match for the people in front of the screen and at the stadium, hard match for me because my team made so many mistakes".
However, Palace's second goal stung United into life and they were soon back in the match when Valencia clipped a cross to the far post where Smalling was lurking on his own to direct a header back across Hennessey's goal into the far corner.
"We played very good quality football in the second half but we made so many defensive mistakes".
Matic then saw an effort cleared off the line by Benteke before, in the 76th minute, his fellow Belgian Lukaku found the vital equalising goal.
Mourinho had at half-time introduced Marcus Rashford for Scott McTominay and adopted a more attacking shape, and after Palace went 2-0 up it began to show. "We made changes. The players accepted the risk, and then I have to admit we were a bit lucky".
"It's a phenomenal goal and a goal [worth] two extra points".
"It's like him [Sanchez] and Pogba are like two kids in the schoolyard "we're the best players we'll go wherever we want".
After Monday's victory, United have the rest of the week to prepare for the small matter of Liverpool at home on Saturday - a game which consistently underwhelms.