Corey Norman is set to be sidelined for a while after the Parramatta halfback was forced from the field during Sunday's 48-10 loss to the Roosters.
Norman was injured early in the second half and Eels coach Brad Arthur believes they will be without their star half for a number of weeks.
"I think – obviously they'll need to send him in for scans – but I think I've been told a grade two medial," Arthur said after the game.
"We'll have to get scans, but I don't know, four weeks."