Canberra winger Edrick Lee has been ruled out for the rest of the NRL season and will have surgery on the foot ligaments he damaged in Sunday's loss to Gold Coast.

The Raiders say surgery is the only option to repair the injury and that the recovery period means he won't be back in 2014.

"Edrick is a real strike weapon for us out wide and he's going to be sorely missed for the remainder of the year," Raiders coach Ricky Stuart said.

"He is a young player on the rise and we'll make sure he gets the best rehabilitation after his surgery and we know he'll be back bigger and better for us next year."

Stuart said the injury opens the door for Bill Tupou to show what he can do on the wing.

"Bill Tupou gets an opportunity to move onto the wing with Edrick out for the year and he's been in good form for the Mounties, as have a number of players across our feeder and NYC teams," Stuart said.