Manager Ole Gunnar Solskjaer has confirmed his 26-year-old player had to miss out on the match after contracting coronavirus.
He confirmed: “He won’t be with us for a little while.
“He went away with the Ivory Coast and tested positive for COVID.
“He’s not back in the country yet.”
Meanwhile, Solskjaer is unsure if Marcus Rashford will be fit enough to play Thursday's (08.04.21) Europa League game with Granada.
Just moments after scoring an equaliser in the game against Brighton & Hove Albion, the 23-year-old forward was seen limping through the tunnel.
It's not known if he suffered another injury or was taken off as a precaution.
Solskjaer told the BBC after the match: "You just hope he can recover from it. He had to come off, but he's a tough one."
On how the game went overall, he added: "I thought we started well but when they scored, after that we couldn't find our rhythm again.
"Second half we played some good stuff. More runs in behind, more movement, better movement.
"Sometimes after international breaks it takes time - and then maybe the fireworks have to be lit at half-time."
Mason Greenwood scored a late winner with Man United beating Brighton 2-1 at home.