Conor McAleny has suffered a broken leg and is expected to be out for most of the 2013/14 season.
The young attacker is on loan at Brentford from Everton and he suffered a fracture to his right tibia during the Sky Bet League One win against Walsall on Saturday.
Conor suffered the injury when he challenged for the ball with Walsall's Adam Chambers in the first five minutes.
Brentford manager Uwe Rosler was quick to absolve the Walsall player from any blame.
Uwe, speaking after the match, said: "Conor was coming in from the side and he wanted to shoot
“Things like this can happen in football.
"I don’t think the player went for him.”
Uwe also expressed his concern for Conor, after watching him stretchered from the field.
“I feel for the lad," he said.
"He is a very promising player and a very good character.
"We will give him all the support we can and hopefully he will come back soon.”
Everton Under-21 Manager Alan Stubbs said: "It's bitterly disappointing for Conor and I really feel for him.
"He was doing well down there, getting some game time and Brentford enjoyed having him.
"But things like this can happen and we'll be here to help him back to full fitness."
Conor is currently being treated in the West London area but he will return to Everton later this week to begin his long period of recovery and rehabilitation.