Henrikh Mkhitaryan has backed Lindelof to perform for Manchester United, believing he will impress Mourinho.
Lindelof joined United from Benfica for £30 million in the off-season, but was left out of the squad that played the opener.
Mourinho has cited the reason for dropping the defender, saying he needs time to adapt to the Premier League.
“Lindelof is still going to have time to show himself,” Mkhitaryan said. “So I want to say all the players are good signings and they are going to help us a lot.
“As a player and for a club, you are always going to have ups and downs. I think the last few years was a little bit down for the club but since last year, and this year, I hope it is going be up for the club.
“We are going to try to do our best to bring the club on the level it was at before. It is always hard but we will try and do our best.”