Mike Patterson was released by the Eagles along with Cullen Jenkins. He's a DT and has had some health issues. Has his health gotten better? Would he be someone who could help along the defensive line? I bring him up because I believe was at USC under Carroll so there is somewhat of a connection there. Don't know too much about him or if he would be a good fit for the team. He was a former 1st round pick.
Here's a link to his profile on NFL.com - http://www.nfl.com/player/mikepatterson/2506370/profile.