McGinest told SI.com that he wants to finish his career on one last playoff run.
"This will be it," he said. "This will be my 15th season. I've worked hard; I think I've done everything I set out to accomplish."
McGinest, who played 12 seasons and won three Super Bowls with the New England Patriots, signed a three-year, $12 million contract with the Browns in 2006, reuniting him with his former defensive coordinator, Romeo Crennel.
In two seasons with Cleveland, McGinest hasn't been the pass-rushing threat that he was with the Patriots. He has seven sacks and 107 tackles in 27 games for the Browns.
He had 78 sacks with New England, set the record for most postseason sacks with 16 and the single-game playoff record with 4.5 in a 2006 wild-card win over Jacksonville.
"I have no regrets or no qualms about my career," McGinest said in a story that appeared on the Web site Tuesday night. "I've done everything a football player can do and I've done it more than once."
