Posted by ESPN.com's James Walker
Crocker joined the Bengals last season and helped a defense that was scrappy and finished No. 12 in the NFL. He had 48 tackles and one interception.
"For the whole second half of the season, he was a leader in the locker room as well as on the field," Bengals coach Marvin Lewis said in a statement.
Dorsey played in four games last season before suffering a season-ending hamstring injury.