Brewer, the team captain, played only 28 games last season before undergoing surgery in December to repair a herniated disc in his back. He had a second back operation in April.
The team said Thursday that Brewer was expected to be sidelined two to four weeks by the latest surgery, performed in Vancouver. It's unlikely Brewer will be ready in time for the regular season opener Oct. 2.
Brewer had a goal and five assists last season and has two seasons remaining on a four-year, $17 million contract.