Eddie Hearn, promoter for IBF, IBO, WBA, WBO heavyweight champion Anthony Joshua, is not standing down while being verbally bashed by WBC champion Deontay Wilder.
In the last few days, Wilder has been jumping to social media to drop verbal bombs on Hearn and Joshua.
The two sides were negotiating a unification for the fall - but there negotiations fell apart a few days ago, and it appears that Joshua will now face WBA mandatory challenger Alexader Povetkin - with a Wilder fight unlikely until 2019.
Both sides are blaming each other for the contest falling through.
Hearn claims Wilder was dragging his feet on signing the contract, and the WBC champ and his handlers claim the contract was lacking crucial information.
The British promoter says the contract issued to Wilder is still live - and all he has to do is sign it. If he does, the fight would take place on April 13 at Wembley Stadium.
"Anthony Joshua has got four world championship belts. Deontay Wilder has got one. We're going to make him a new belt, it's called the Instagram world champion. Now we get to see the truth. They seem so devastated about not getting the Anthony Joshua fight and that we definitely don't want the fight," Hearn said to Sky Sports.
"The contract is still live, it's still valid, it's sitting on your manager's desk. Apparently you only had two minor comments that you couldn't even send us, so send them now, or sign the contract and we will sign the contract before your ink is dry. So stop fooling the fans, and ask the fans and the media to put pressure on Deontay Wilder, because if you really want this fight, it's still there, sign it.
"April 13th at Wembley Stadium, Deontay Wilder can give the fans what they want, so don't worry about us, certainly don't worry about Anthony Joshua, he will fight any man."