R 23 NRL Wests Tigers vs Manly Sea Eagles at Leichhardt Oval . Picture : Gregg Porteous

Manly Warringah Sea Eagles centre Brad Parker will undergo knee surgery this week.

Results of scans today revealed Parker has a lateral meniscus tear suffered in the loss to the Wests Tigers at Leichhardt Oval yesterday.

Parker is expected to be out for 4-6 weeks. Following surgery, Parker will begin his rehabilitation program with the Manly medical staff.