Tyson Fury has been warned that he could lose his IBF world heavyweight title if his rematch with Wladimir Klitschko goes ahead.
Fury took possession of Klitschko's WBA, WBO and IBF belts by outpointing him in Dusseldorf last weekend, but the IBF has made it clear that he must first face mandatory challenger Vyacheslav Glazkov if he wants to keep their strap.
"To be clear, Tyson Fury must fight Vyacheslav Glazkov next. If they agree terms before December 11 we cancel the purse bid. If it goes to a purse bid, the winning bidder has 90 days to do the fight," IBF chairman Lindsey Tucker explained to World Boxing News.
"Regarding the Klitschko rematch taking precedence, it's just the opposite as the mandatory takes priority of the rematch.
"In fact Rule 3B Return Bout states: No contract for a Championship contest shall contain any clause or provision, whatsoever, guaranteeing or in any way assuring or promising either contestant a return Championship contest where such clause or provision interferes with the mandatory defense of the Title."
If Fury ignores the IBF's warning and relinquishes the belt by fighting Klitschko first, Glazkov (21-0-1-KO13) would face either Charles Martin or Erkan Teper for the now vacant IBF title.
Responding to the governing body's warning, Fury's trainer and uncle, Peter Fury, labelled it a disgrace.
"If they want to take the belt from us in such pathetic and disgusting circumstances, that will result in a public and embarrassing display for the IBF. That's for sure," he said.
"I think it's totally unfair and unprofessional from the IBF, because Tyson was crowned champion only on Saturday. With all this carry on, they're giving us no time. They should be happy he holds the belt and is fighting again in the biggest fight out there. The winner would then take the IBF mandatory.
"I can assure you it hasn't come to light as far as we're concerned until after the fight. If the Klitschko camp knew it, they should have divulged that information but I don't know if they did. We didn't know anything about it and we don't want to give up the belts. How can we face Klitschko and Glazkov at the same time? It's ridiculous.
"It damages boxing as a whole. We've said what should happen and we're happy to defend it and take the mandatory but don't hold us to ransom. There's no way we can take the fight before Klitschko – he's first in line. We're happy to show the IBF the contract and if they can see a way out of it then we'll face Glazkov first. But we know there isn't.
"Let Tyson get through Klitschko and then we'll face Glazkov. We want to face the mandatory fighters but we don't want to be stripped of a belt when it's not correct. I've not had a chance to speak to Tyson yet but I'm sure when I do, he'll hit the roof."