Yeah, he's not going anywhere.
But what a way for him to get some revenge on his way out. When he's ready to retire:
1. Ask for his release from his Patriots contract. Kraft agrees.
2. His agent puts out an RFP for a five year contract. Sealed bids. One month to respond.
3. Four weeks of escalating frenzy, with all kinds of leaks and speculation about who is bidding what.
4. At the end of the four weeks, he announces that he's changed his mind, and is retiring after all.
5. The bids are "leaked", making transparent all the backdoor dealing by teams that already have coaches and GM's. Every owner who is a scumbag and bids while still having personnel in place is shown to be who they are...which will be a lot of them.
6. The leak is done through ESPN, forever harming its relationship with every NFL team that is connected to the bidding.
Anyway, that's what my devious, evil mind can come up with a few minutes to work with.