Dillian Whyte did not attend Tuesday's press conference with Tyson Fury ahead of their heavyweight clash.
The pair will finally trade off on April 23, at Wembley Stadium for the WBC title.
Whyte - who signed a contract to face Fury hours before the deadline - did not turn up in London to promote his upcoming clash, and according to his lawyer, it is because he was not invited alongside fears that Fury will pull out of the fight.
His adviser Jeffrey Benz told The Sun: "Dillian Whyte would have been more than happy to attend the ticket launch event but was not able to reach an agreement with Frank Warren's Queensberry Promotions on even his very basic requirements which are normal in the sport of boxing
"But they didn't even given us notice of where and when this one-sided shindig will occur. It really is incredible.
"We are dealing with dinosaurs here. They bid $41m for a fight but are all over the place. They haven't even met Dillian's basic requirements which are entirely usual and nothing out of the ordinary."
The Gypsy King said: He's [Whyte] is very lucky that he's in my era. He's very lucky to be receiving this amount of money and the only thing he has ever won is the British title.
"He's been banging on about how we are all scared of him. I've given him a new nickname anyway - he's called... Frillian Whytenickers. It's not Dillian Whyte, it's Frillian Whytenickers because he's as soft as the title.
"He has definitely shown the white flag today," Fury added.
Fury is fighting for the first time since defeating Deontay Wilder for a second time in October while Whyte is returning after avenging his defeat to Alexander Povetkin in March 2020.