I honestly didn't believe that Moss would be happy in Raiderville, but I can almost guarante that the Rooneys/Cowher wouldn't have any interest whatsoever in him because of his attitude issues. Historically, the Steelers have tried to stay away from those types of players and I don't see that changing.
If the Pats are indeed interested in Moss, I would be a little shocked, as (1) Kraft is a cheapo and a miser and (2) the Pats tend to shy away from problem children, as well. I think he'd be a good fit for the Bungles, though - one more huge ego and attitude problem. Their locker room would totally implode.