I'd give him 5 years at $60M, which means $12M per. Only it'd have to have clauses he'd need to hit, like playing time, pro bowls and low sacks allowed numbers.
He can have the money, but he has to earn it, ya know?
I know he wouldn't be quick to sign an incentive-laden deal, but if he's confident in his abilities, he'd do it. Because if he is the best LT in the game and wants to be the highest paid LT, then he should step up and show it.