1. The Cowboys can pay him more 2. There is a talented qb on the roster, who he has worked with before, and a talented defense in place. 3. If he wins another sb in no, been there done that. If he takes one of the legendary sports franchises who has fallen on hard times lately, and wins a sb, he will be a hero. 4. He probably wants to distance himself from the saints and all the bounty gate crap.