Manchester United boss Ole Gunnar Solskjaer admits Marcus Rashford suffered a shoulder injury against Paris Saint-Germain.
Rashford came off in the second half during the 3-1 defeat for the Red Devils in the group stages of the Champions League.
The England international may be back for the club's Premier League clash against West Ham United, but the manager was not sure if he would be available for selection.
"It's just niggling him, that shoulder injury," Solskjaer told BT Sport. "Let's see how quickly he can recover.
"Let's hope he can be ready for the West Ham game. But we don't know."