Promoter Frank Warren, who handles the affairs of Daniel Dubois and Tyson Fury, hopes that the IBF will postpone the mandatory defense of Dubois’s title and wait until a fight for all the belts between Daniel and the winner of the fight Oleksandr Usyk – Tyson Fury can be arranged . 
The rematch between Usyk and Fury for three belts will take place on December 21.
“Let’s see what the IBF will say. The rematch between Usyk and Fury is an incredible fight, and a lot depends on its outcome. I’m sure Fury will win, and after that there will be an all-British title fight. And it’s incredible.”
“But the second fight against Usyk will also be a great event. Dubois wants to answer him. So Daniel has a good choice,” Warren said.
The IBF previously ruled that Dubois has until April 22 to defend his title, but could change the decision for another fight with all the belts on the line.
Source: sport.ua