Fulham winger Damien Duff collected an injury in their Europa League defeat at FC Twente last night.
Duff is set to miss Monday night's Premier League clash with Liverpool after he limped off during Fulham's 1-0 Europa League Group K defeat to FC Twente.
"Duff has (suffered a recurrence) of the old problem with his calf injury that kept him out for two weeks," Fulham manager Martin Jol said.
"He came back and had the same problem, but hopefully Dembele is fine. Damien could be a doubt but I expect Mousa to play and Clint could return."