IMO Wolf is actually pretty good on defense. Big body, good defensive hands, and moves pretty well. I think you’re in trouble if he’s your center, but he’s not that bad imo. Kind of like Flip on defense (tougher rebounder, probably not as mobile as Flip). I think he fits into a 3rd big kind of role well.
Biggest concern on him for me is his jumper. If he can shoot he gets really interesting, otherwise his skills might prove to be unique but not impactful.
Very fun to watch though. Reminds me a bit of Diaw.