Bradford winger Omar Daley could now be missing until Christmas after his injury was revealed to be far worse than first thought.
It was originally thought that the Jamaican international would be out until the end of the season after suffering a knee injury in the recent goalless draw with Darlington.
But surgery since has revealed that the injury is a lot worse than at first believed.
Bradford boss Stuart McCall told the Telegraph & Argus: "It's a lot, lot worse than anyone was expecting.
"The scan could only show so much and when the surgeon went into the knee to operate, he found the problem was much bigger.
"It's not only the lateral ligament but the cruciate is damaged as well. It was a really bad injury and the surgeon thinks it could be eight to ten months before Omar can look to play again.
"We could be looking at Christmas, which is obviously a massive blow."
The news comes after Daley, who had started 29 games this season, was stretchered off after the tackle with Quakers defender Neil Austin.
McCall added: "It's going to be very hard for Omar but he's got to try to get his head round it. He needs to be mentally strong.
"He's saying all the right things about coming back stronger and I'm sure he will. Omar's going to be in a brace for a few weeks and then he can hopefully start setting himself little targets."
The news presents McCall with an injury headache in midfield as Paul McLaren injured his calf in training and will miss Saturday's trip to Notts County.
Chris Brandon played his first reserve game this week after long-term injury but McCall says he will be given time to build up, while Joe Colbeck has only recently returned from a three-month absence.
McCall added: "We get Joe back after his spell out and Brando is slowly coming back, then this happens to Omar.
"A week ago I was struggling to name a bench because there were so many players available but unfortunately injuries are part of football."