Can Jerry cough up 1 billion dollars? If so, he should offer that to Belechick to coach the Cowboys, plus offer letting him sleep with Jerry's wife and give him a pint of his blood, his favorite car, and all the art in his house. One more thing: Guarantee in the contract that Jerry will spend every NFL season on Tuvalu Island without meddling in the team's affairs. The only communication Jerry is allowed with the team is a postcard from Tuvalu telling them about the nice beaches and his hammock.
Give Belechick anything he asks for to bring him to Dallas.