Shame it wont happen unless Spence leaves Al or Crawford leaves Bob.

Hopefully, one day, it does happen. So far, Crawford hasn't fought anyone near Spence level, arguably his best wins are Gamboa and Khan, whereas Spence will have victories over Garcia, Brook and Porter (seeing as everyone has written Porter off). Crawford is superb, he just lacks the acid test, like dudes like Calzaghe and Hopkins suffered from back in the day.