Yeah, the Belicheck method only works because Belicheck has the greatest QB of all time on the offensive side of the ball. He can afford to let lower caliber players that want too much money go, like Collins. Mack isn't that player. I'm pretty sure if Mack was on the Patriots he would've signed the lucrative extension. Belicheck has proven in the past with players like Revis if you're a generational talent he'll pay you.