Leeds United defender Tom Lees was temporarily blinded in one eye in an incident in Friday’s draw at Brighton.
The 21-year-old, who suffered the injury in the first half of the match at the Amex, is a doubt for Tuesday’s trip to Burnley.
Manager Neil Warnock said: “Tom got a nasty finger in his face. He couldn’t see out of one eye and it blinded him for a bit.”
“He went to hospital and it’s a worry for us.”
Lees who came through the youth system at Elland Road was one of 11 people charged by the Serbian Police last week after the mass brawl at the end of the Serbia U21s and England U21s match in October.
He has been a Championship ever-present for Warnock’s side so far this season.