Well, first he is a fan favorite in Buffalo, right? I pose that question because I am not, nor have ever been to Buffalo. But, he seems to be a fan favorite, from an outsiders prospective. Therefore, IMO he wouldn't want to ruin that respect from the fans. If he just came out and said that he wanted to play for a contender he would have been roasted on this sight for sure, as well as in public.
Second, his actions speak louder than words. He hasn't shown up for ANYTHING yet. I know it is all voluntary but still, he hasn't shown up. Nor has he said anything. He hasn't spoke with Buddy Nix, or Chan Gailey, that we know of. That leads me to believe that he is either retiring or trying to get Buffalo to trade or release him. Either way, I don't think he wants to be on this team.