Fulham midfielder Simon Davies could be sidelined for up to five months after suffering complications with a knee injury.
The ex-Wales international, 31, was closing in on a return but the injury is more complicated than thought.
"Simon has a pretty tough injury," said Fulham boss Martin Jol. "He will be out for the next couple of months."
When questioned further, the Dutchman added: "It is a technical thing. It could be four to five months."