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By Matt Encarnacion
SYDNEY, July 11 AAP - Brett Stewart's NRL future is in doubt after being booked in for knee surgery that has ruled him out for at least six weeks.
The club confirmed the Manly veteran will go under the knife in two weeks before a decision is made whether he will finish up for the season.
Stewart, 31, who has one more year remaining on his current contract, has been linked with a move to join to brother Glenn at Catalans Dragons in the Super League next year.