Manchester United manager Ole Gunnar Solskjaer admits it is "touch and go" whether Marcus Rashford will play again this season.
The striker has a double stress fracture of his back, which he picked up during last month's FA Cup third-round replay win against Wolves.
Solskjaer says Rashford could also miss out on England's Euro 2020 campaign in the summer:
“I would hope he plays before then, but if he’s not fit enough he won’t go.
"I would hope he’s playing this season but it’ll just be touch and go towards the end.
"Hopefully, we get through this tournament and prolong the season.
"It takes time, I’m not a doctor, but I was hoping he would recover quicker than it actually looks like.
"He’s going to be out for another few months, definitely.
“He had a scan and it was maybe more severe, that fracture, than what we hoped for and expected.
"He felt fine the few days before. When it heals he’ll be stronger for it and it’s important we don’t rush him."
United's Europa League round of 32 first-leg against Club Brugge tomorrow comes just three days after their win at Chelsea in the Premier League and Solksjaer admits it is far from ideal.
“It has a big impact, two days recovery is not a lot. We had to prepare for this spell coming up.
"We have seven games in 21 days starting on Monday and ending against City,” he said.
“We have a big squad and we have 19 here. A couple of youngsters haven’t travelled.
"I’ve got to make not too many changes but enough to keep consistency and we want players feeling part of the team.
“Ideally, you would want to get a game on a Saturday before a Thursday but we can’t complain, it is what it is.
"I just mentioned it because it’s not the best of preparation.
"These boys are brilliant and just get on with it. They’re young and fresh and recover quickly.”