If he has any skill at all to situations like this and knows about the pressure he's gonna move with almost any hand in my opinion since he knows the button will be AI. He is guarenteed 2nd place no matter what happens. I'd make his range really loose and would play it as if I wanted to win the tournament. A8+,88+. I think common hands for him to push are suited connectors, any ace, any pair, and if he knows this kinda situation basically any two. With that calling range my ace will be dominating him over half the time if he has an ace any my pairs will be overpairs to him over half the time or a 55/45 favorite most of the time. Hands like KQ and KJ are probably appropriate against a large range, however, I don't want to get my money in as a dog to any ace.