Manchester United midfielder Scott McTominay had to be taken down the Old Trafford tunnel on a stretcher after a coming-together with Brighton's Solly March on Saturday.
The midfielder clutched his left ankle and writhed in pain during injury time of United's 3-1 win and subsequently withdrew from the Scotland squad to face Cyprus and Kazakhstan.
McTominay was not in possession of the ball when he went down but images from behind the goal show the midfielder's ankle buckling after March accidentally kicks him.
March appears to be rotating his body after a turnover in possession and, as he swings his leg around to face the Brighton goal, he catches McTominay's left leg just above the ankle.
McTominay is understood to have undergone scans on the problem earlier this week but United are yet to issue an update on the problem.
"I don't know, he's in for a scan tomorrow and then we'll have to see, with the ice there," Solskjaer said on Sunday. "But it looked painful, Scotty's not one for rolling around.
"Or he didn't really roll around, because that's probably the sign he's injured, all the players that keep rolling aren't injured."
Speaking about McTominay's withdrawal from the Scotland squad, assistant head coach Alex Dyer said: "If a player is injured, we can't do anything about it.
"All the ones that have pulled out this time are genuinely injured. It's not like they wanted to be pulled out or didn't want to come."
