Donte Wilder has accused Tyson Fury of delaying his triangular fight because he was beaten by someone from the US camp.
Rosh, 33, criticized The Bronze Bomber in July for accusing Burt of lying in order to push back the fighting from July to October.
Wilder will now try to regain the WBC lease in early 2020 when he faces The Gypsy King for the third time on October 9.
But the American has continued to believe that anger is running out of him and is claiming that the champion was beaten in preparation for the actual July date.
Wilder told the PBC podcast: “They’re trying to run away from him. I’m running towards him. I’m not sure he was a coward.
“I know he was not doing well in the camp. The young boys were catching him.
“I had a young man from my camp holding him.”
The pair fought for a controversial draw in Los Angeles in December 2018, a clash that many felt Fury won after climbing the canvas in the dramatic 12th round.
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They then went their separate ways with two fights before returning to the ring with each other 14 months later in Las Vegas.
And this time the anger decisively managed to keep the builder away from Wilder as he overpowered the American, eventually stopping him in the seventh round.
A triangular battle was to take place in late 2020, but the corona virus epidemic prevented it from happening.
Anger then turned to ignoring Wilder and creating an undisputed confrontation with United champion Anthony Joshua.
But a court ruling by a mediator ruled that the United States was entitled to a third fight, a decision that ruled out a future Joshua contest.
To meet the two British for all the ballots, Fury will now have to go through the Wilder again.
And AJ will have to defend his ballot against former undisputed cruiser weight champion Oleksandr Youssef on September 25 at Tottenham Hotspur Stadium.
Talking about the fight with Joshua, Fury said: “AJ couldn’t smoke, Gypsy King didn’t mind. He didn’t get the minerals to fight a man like me.
I told Eddie Deer. [AJ’s promoter] “The difference between me and him is that he is a businessman and I am a Spartan.”
“And I’ll show him when I get in the ring. I’ll finish this bodybuilder completely, he won’t go beyond six rounds. He’ll finish soon.”
“He knows it and his whole team knows it.