Better check with Kraft on that. He thinks Brady is playing for another 7 years.
There is probably nobody who does more to keep himself conditioned for longevity in the NFL than Brady, but Father Time is undefeated. If he is still playing in 7 years it won't be as an elite QB.
And even if he is, the trade I am proposing will put New England in great shape for about 7 to 10 years, and Brady led Bills won't go anywhere because the Bills won't be able to build a team around him.
Wouldn't be the first time Kraft has agreed to trade a pro-bowl QB he loved to the Bills.