Jake has since departed Kangaroos camp and will meet with a specialist early next week to determine the severity of the injury.
He’s expected to recover in 10-14 weeks and will race the clock to be fit for round one next season.
Jake isn’t the only forward on the casualty list for the opening game. Souths forward Sam Burgess also picked up a leg injury, which forced him to sit to out the remainder of the game.
Burgess is expected to be sidelined for 3-4 weeks.