Pro Bowl linebacker Lofa Tatupu is planning to make a comeback next season.
Tatupu was released by the Seattle Seahawks prior to last season when he refused to take a pay cut, but a source close to the player told the National Football Post that a knee injury forced him to sit out the season.
Tatupu underwent arthroscopic surgery on both knees in January 2011 after collecting 88 tackles, one sack and one interception in 16 games in 2010.
It marked a career-low in tackles for Tatupu, who became the first Seattle player to lead the team in that category for four consecutive seasons from 2005-08.
The 29-year-old Tatupu had signed a six-year, $42 million contract extension in March 2008.