While I've always been a major supporter of Vlad, I don't trust fat athletes to maintain their weight once they've cashed in their long term deal. If he signs any 10 year deal, there need to be weight restrictions built into the contract like Zion's in the nba.
Only then, would I begin negotiations on a long term deal. The Jays need to get on this asap or risk losing him for nothing but a compensatory pick.