"I firmly believe that fans will see a fight for the four heavyweight championship belts, but not now. Usik has to give Joshua a rematch first. Anthony deserves a chance to get his titles back, anyone can have a bad day and he's done a lot for the heavyweight division in recent years," said Hearn.
"During this time, Fury will have to face Dillian Whyte. Regardless of what he thinks of the fight, I'm convinced that such a fight could attract any stadium in the UK and at least a million pay-per-views," added the Matchroom Boxing head.
White is the interim World Boxing Council heavyweight champion. If he defeats Otto Wallin on October 30, the WBC will officially schedule White's fight with Fury.