Tyson Fury has accused Vladimir Klitschko of faking injury after the Ukrainian postponed their world heavyweight title bout claiming a calf problem.
Fury had been due to face Klitschko in Dusseldorf on October 24 but the bout will now have to be re-scheduled.
But Fury claimed he knew the 39-year-old was going to pull out, and questioned the legitimacy of the reason.
"Whatever Klitschko's reasons are, I can tell you all now there's no injury," Fury said.
"He either needs more time to prepare, more time to get his mind set straight, or more time to talk over what he's going to do. There's definitely no injury. Definitely, definitely not."
Klitschko's announcement comes just two days after Fury dressed as Batman and wrestled a man dressed as The Joker during a press conference to promote the fight.
"Am I that intimidating? Am I that scary?" Fury added.
"Let's hope he wants to do the fight again. He can't go anywhere else. The only option is to retire."
Fury said he feels for his supporters as they have to unpick their travel plans.
"All my supporters and fans - they always lose out," he said.
Klitschko said he would aim to recover "as fast as possible" so the fight can be re-arranged.