I say there's a small chance, very small. It would take a few rolling parts to get going before the offseason.
An implosion in the playoffs. Brady pulling a Marino and playing past his usefulness, and maybe Kraft showing loyalty to Brady over Bill.
Even then, would BillB want guys like McClay, Jerry, Stephen etc all in the war room? I could imagine the stares when Jerry tries to promote his wanted player over BillB's want.
Or Jerry going on the radio talking about possible starters and roster talk.
If BillB does leave and still wants to coach, you can't count out Dallas, purely because it's Dallas. But I'm not getting my hopes up at all.