Tyson Fury will not face Deontay Wilder on July 24 after testing positive to Covid-19, Planet Sport has been informed.
Fury, who is yet to defend a world title, has been slammed by Wilder's co-manager Shelly Finkel.
"If Fury and his team had taken their vaccinations then there would have been a fight on July 24," Finkel exclusively told Planet Sport.
"All we want is to reschedule and get him in the ring," he added.
Top Rank are currently discussing potential dates but October is the month they are keen on so they can avoid clashing with the likes of Saul 'Canelo' Alvarez on Mexican Independence weekend and Oscar De La Hoya's comeback in September.
Whyte prepared to step in
Dillian Whyte is ready to jump in and replace Tyson Fury to fight Deontay Wilder, according to Eddie Hearn.
However, due to a court ruling in Wilder's favour to take on Fury for a third time this summer, a fight between Whyte and Wilder is impossible due to legal reasons.
Either way, Whyte is not the biggest fan of the "Bronze Bomber" and has previously labelled him an 'idiot' for firing Mark Breland.
"I think it's the worst mistake he's ever made because Mark Breland is the only person in his team that actually was a boxer and actually was a world champion," Whyte told Sky Sports.
"He was the only person that didn't care about money or fame. "[Breland] was actually from an emotional point, someone who understands, thinking about his health and did the right thing by throwing the towel in, because he could have got seriously hurt.
"He was getting hit with punches that weren't knocking him out, they were concussing him. Mark Breland knows what it's like, because Mark Breland has been in the same position Wilder was in. He's someone that cares about the athlete and the boxing side of things.
"Not just 'Bomb Squad', nonsense. He doesn't care about that. He's the only one in the team; you don't see him running around and shouting and screaming. He's just a little quiet guy, does his job.
"Deontay Wilder is an idiot, he clearly can't see it. Good luck to him, it's his team, he can do whatever he wants. But I think it's a bad mistake. Mark Breland is the only one that knows boxing in his team."