In his full comments, Krassyuk told boxing journalist Steve Kim: “They’re still treating Oleksandr Usyk like they did with Derek Chisora, or Dillian Whyte.
They act like it’s just a regular Fury fight in the UK, and everything has to be by Fury’s rules.’
“We’re going to wait [and not issue a deadline] because right now we’re in the process of hiring British counsel because they are going by the British rules.
“We are the outsider, but we can’t just play by everything they throw to us. Enough is enough…
“If this fight is going to happen, only April 29th. Or it’s just going to be cancelled, and we’ll go with the mandatory.”
However, Usyk himself delivered a more promising update on Saturday.
He wrote on Twitter: “The points for agreement were sent to Fury’s side. The deadline is set. The clock is ticking. The ball is on #Greedybelly’s side now. We did everything in our power to make it happen @Tyson_Fury.”
The WBA, meanwhile, have set a deadline of 1 April. Contracts for the undisputed fight must be signed by then, or Usyk will be ordered to defend vs WBA mandatory Daniel Dubois.