Republic of Ireland international Troy Parrott could face another spell on the sidelines after suffering an injury on his Millwall debut.
The 18-year-old suffered an ankle injury during the first half of Millwall's Carabao Cup defeat to Burnley on Wednesday night.
The Dubliner tried to play on with the ankle problem but he had to be replaced at half time.
Millwall manager Gary Rowett said: "The disappointing thing is Troy picked up an injury quite early on....you could see it was affecting his movement.
"He had to come off at half time. He got a kick on the ankle early in the game.
"You could see he was struggling movement-wise. I probably should have taken him off. It doesn’t look great, but we’ll see."
Parrott, who's on loan from Tottenham missed the start of the Championship season with a quad injury he sustained in pre-season.
The injury also ruled him out of the Republic of Ireland’s Nations League games against Bulgaria and Finland after he had been included in Stephen Kenny's senior squad.
Rowett added: "It’s a big blow for us because we haven’t scored as many goals as we’d like anyway.
"Troy was brought in to give us that extra quality but at the moment he hasn’t really been available.
"He’s such an honest kid who is desperate to score goals. he’s worked incredibly hard.
"Even today when he’s struggling he is trying to stay out there. It’s done for the right reasons.
"Troy is a young lad and he’s been desperate to play and devastated about being injured, he’s stayed out there and tried to continue."
