Brady won't shit anything if he is healthy. If he has a decent O line and decent receivers he's still the guy I'd want leading my team.
Is he better than Patrick Maholmes, and, or, Lamar Jackson? He's wiser than those two. That counts for a ton at that position. Those two are certainly in the conversation. But in my humble opinion no one else is, even at Brady's ripe age of 43. Unlike Peyton at the end of his career Brady's arm is still live. And his motivation to prove himself in another uniform would be huge.
I'm nearly 100% sure that the money would remain secondary and IF he were to leave the Patriots it would be for a team that he thought he had a pretty good chance of winning with.
Good luck, Tom. I hope it ain't so, but if it is I wish you nothing but continued success.