There's three things that Fury does often enough that at some point they will haunt him. First,, he has a tendency to lean up on his left foot when he jabs, and Rahman is (was?) a pretty good right hand puncher. Second, sometimes he throws a nice, short straight right, but other times he waves it, and a good counter to that is another right hand. Third, he like to throw a right uppercut, but when he does he just drops his right hand and leaves himself wide-open.
Rahman fought three times last year, weighing 250+ each time. If he tries to win, he can, but I'm not sure he's being brought over to win.