replacing Bruce Carter with Dunbar?

Carter has been benched. I have 3 starting LBs already and a flex (D Washington, Poz, Freeman, Butler). Is Dunbar a good bench stash to see how things play out in St. Louis based on his performance last season? Other wire options include Thomas Davis, Bartu, Kruger, Mingo, Angerer, and Paysinger but they do not seem to have as much upside. Thanks.

Not big on Dunbar. Only going to be a two down backer this year with Ogletree around now.