Lyndon Dykes is a doubt for QPR’s trip to Rotherham this weekend.
The striker came off during the win against Blackburn after taking a knock to the head and has not trained so far this week.
It means Rangers are currently unsure whether he will be available for Saturday’s game.
Assistant manager John Eustace said: “We’re not sure yet. We’ll still assessing him. He won’t be training until possibly tomorrow, so it’s still 50-50.
“It was a nasty bang on his head at the weekend, so we’ll have to wait and see.”
Recently loan signings Jordy de Wijs and Sam Field are not yet fit enough to play so will not be involved at Rotherham.
Eustace took training on Thursday morning because manager Mark Warburton was ill with an upset stomach.
Warburton is expected to return on Friday.
Eustace explained: “He’ll be absolutely fine. It was best to stay away today and he’ll be ready to prepare the team tomorrow.”