Possibly. Accidents happen, as Fury fans want us to know. If he gets injured he shouldn't have to pay any compensation though. Only Fury should have to do that. And no one should question his heart or the legitimacy of his injury. He won't pull out though. No need to be at his best for a washed up has-been living off past glories.
If I were Usyk I'd leak a video with about a gallon of fake blood streaming from his forehead 2 days before the fight and then seclude himself from view and insist everything was OK. Fury would lose his mind.
Hey, he's training hard, could get injured. He's not young and has had injury troubles. If he pulls out injured I wouldn't judge him for it. Nobody should have to fight compromised.