Jose Mourinho admits Manchester United are "in trouble" amid growing concerns that Zlatan Ibrahimovic will not play again this year.
Thursday's progress to the Europa League semi-finals came at a cost as both Ibrahimovic and Marcos Rojo suffered nasty-looking injuries during the 2-1 extra-time win over Anderlecht.
Rojo was taken off on a stretcher after seemingly sustaining a knee injury, and Ibrahimovic landed awkwardly just before the end of normal time in the quarter-final second leg.
The 35-year-old striker's knee buckled, with reports on Friday evening suggesting he could be out until 2018 due to cruciate ligament damage, and Mourinho fears the worst when it comes to the injuries sustained by his top scorer and influential defender Rojo.
Ibrahimovic. Pic: Getty
Both are being assessed to see how long they will join Juan Mata, Chris Smalling and Phil Jones on the sidelines for at a crucial point in the season, with United chasing Europa League glory and a top-four Premier League finish.
"We are in trouble," Mourinho said. "We are in trouble.
"In this moment, Eric Bailly played six matches in a row, and we lost Marcos Rojo, we don't have Jones or Smalling, we are in trouble and now we lose Zlatan too.
"But in attack, we have options and (Wayne) Rooney is coming, and let's see if Mata can also return before the end of the season, let's see what happens."
Rojo told reporters he was "OK" while limping heavily through the post-match mixed zone, and Luke Shaw said Ibrahimovic did not seem in too bad a state in the dressing room.
"I knew it did not look so good on television, but he seems to be in good spirits," the left-back told Swedish sports paper Sportbladet.
"He walked around in the dressing room. I do not know the extent of his injury, of course, but I saw him in there and he was optimistic.
"Hopefully it is not too bad for him. We hope it is not too serious and he seems OK."