Not really worried about Mathis. Players have cleanout procedures all the time. I'd like to see them add another veteran lineman though. Preferably someone that can play G or C. Of all our backups, Kelly is the only one I'm comfortable with. Maybe this will give Watkins a chance to prove himself. Most of the other guys are street free agent types or raw prospects like Menkin. Dallas Reynolds started a lot last season and while he wasn't as horrible as I expected him to be he wasn't exactly good either. Not much out there at this point in the offseason but I'd give Antoine Caldwell or Doug Legursky a look.
Also been saying Mathis is the best center on the team. I'm more concerned about Kelce coming back than Evan because he hasn't even been cleared yet. Either way these two should be duking it out at center.
Assuming Watkins can hold up at LG (playing along side Peters should help) this is our oline right here. Neither Mathis nor Watkins is a right guard. I'm very eager to see Lane and Herremans on the right side. Without Todd at right guard, we have a huge hole there.