AJ Brimson has had scans after injuring his shoulder playing for England in the third and final Ashes match against Australia at the weekend.
Results show that Brimson suffered an AC joint injury in the 11th minute of the game, requiring him to leave the field for the remainder of the match.
He will now begin rehab program with a view to being back to full training in January - ahead of NRL pre-season trials held in February.
Brimson debuted for England after switching his country representation from Australia - via his mother's heritage - playing in the second and third matches.