A guy who hasn't been on the field in what, a year and a half....you want him making line calls vs Seattle? That's asking for disaster.
Lets see if the guy can get up to speed and not get injured for a week first. At some point he will get in. Figuring in his rust and returning from a couple of injuries, I don't expect a ton initially. Once he gets in I think you ride out the season with him to decide if he is your C going forward or if you look in FA.