Because his size has been his advantage thus far and he's afraid he'll get exposed by another big dude
thats all it is. hes alreadu beaten chisora and it wasnt controversial, im not that excited about that fight at all. i like fury he entertaining as any other heavyweight but he cant expect a title shot until he starts beating top men. that doesnt include joey abell or cunnigham (at hw) i thought ustinov would be an easy fight for fury to be honest. the russian slouch couldnt get any slower if he was pushing through a swimming pool of treacle.
He won't fight Ustinov because it is a dangerous fight and he wants to take as many winnable fights until he can cash out on a possible Wlad fight down the line.
This exactly. Then you can't have an in shape 20 stone (280lbs/127kg for the civilized world) dude trying to knock your head off. :yep