Clive Allen reported that Dorian Dervite will undergo scans on Tuesday to determine the damage in his right knee after he was injured in Monday night's friendly at Norwich City.
The promising young centre-back who has already made his first team debut this term was stretchered off in the 19th minute at Carrow Road following a tackle with Luke Daley. He limped out of the ground on crutches after the goalless draw.
Meanwhile, Tomas Pekhart was stretchered off in the 30th minute with concussion after a clash of heads with Canaries defender Tom Miller.
Development coach Clive revealed: "Dorian said he felt something in his knee when he was tackled, so he will have a scan tomorrow (Tuesday) to see if there is any damage. That was very disappointing.
"The other injury was a completely accidental clash of heads with Tomas Pekhart - he was concussed, went to hospital as a precaution but was able to travel home.
"It was a great shame because it was a game played in the right spirit. We're disappointed because we've picked up a couple of injuries but these things happen in football."