Avenue loanee Reece Webb-Foster has returned to parent club Bradford City having been ruled out for the rest of the season.
Webb-Foster injured his anterior cruciate ligament in Avenue training on Thursday, before he was set to start the home match against Gainsborough on Saturday.
The match on Saturday was due to be the last of Webb-Foster’s month-long loan, though work was ongoing to extend the spell beyond the month.
However the 18-year-old now faces around six to nine months on the sideline and his knee will be operated on. He is contracted at City until the end of next season.
City manager Stuart McCall said: “It’s really terrible news for Reece, he’ll be out for at least six months.
“He’s got to knuckle down now and be mentally strong. He needs surgery but he’ll want to come back stronger than ever.”
Avenue boss Mark Bower added: “We were just working on some shape for Saturday’s game and he’s gone down as he turned on the ball. We could tell it was serious straight away.
“It’s terrible for the lad at his age. Naturally we wish him all the best and hope he makes a full and speedy recovery.”