Zhang would hit Chisora so hard, he'd turn into a block of petrified wood. They'd have to wheel his ass out of there with a hand truck.
I picked Joyce to grind Chisora out of there and can state it with confidence: Zhang would murder Chisora!
Very, very, very bad idea. Worst what possibile can happend to Dereck. Hope its just fake news and more realistic option is Dillian Whyte- fight that now can go pretty good way for Chisora.