English-born Ghanaian forward, Jesurun Rak-Sakyi is facing a lengthy spell on the sidelines after picking up an injury at Crystal Palace.
Rak-Sakyi was not in action at the weekend when his outfit defeated Burnley at Turf Moor due to an injury setback.
In his absence, the Eagles cruised to an important 2-0 away victory on Saturday, with goals from Jeffrey Schlupp and Tyrell Mitchell.
The 21-year-old will undergo scans to determine the severity of the injury, but manager Roy Hodgson describes the injury as very bad.
“It is bad. We don’t know 100 per cent. We’re not talking a week or two — we’re probably talking longer than that. It’s a real blow," he said.
“Just as you get Eberechi Eze and Michael Olise back almost into the fold, you lose another player who we think is very important for us in our attacking play. We regained two and lost one. I would have preferred to have all three.”
The England youth international rejoined the South London club after an excellent loan spell with Charlton Athletic.
Rak-Sakyi remains eligible to play for Ghana despite represent the European nation at youth levels.