I think that there are certainly some valid points and concerns that you bring up. Personally, if I were in the position to make a decision, (you can stop laughing at any time now) I would probably lean towards giving him a solid look. We've seen Belichick have success working with players of all attitudes, backgrounds, and have the necessary "agreements" in place with veterans who don't want to go through training camp. As a whole, it's not a good practice to consider for many players, but there are exceptions that may be made; and in my opinion, Tony Gonzalez is probably one of these kinds of examples seeing as how he instantly adds an upgrade of talent when he hits the field. On top of that, it would also limit some concerns that we'd have with Gronkowski staying healthy (not meaning to insinuate anything or open that can of worms), as Gonzalez would still do enough in the move/joker role to keep us going quite nicely.