Tyson Fury's dad John has told Deontay Wilder he needs to take a lesson from Anthony Joshua on how to handle defeat instead of spouting 'absolute rubbish for the last two years'.
Wilder is set to face the Briton for the third time on October 9, to settle their long-running rivalry.
The Bronze Bomber was brutally stopped in the seventh round of his Las Vegas gun-slinging match with The Gypsy King - losing his WBC heavyweight title in the process.
The pair's highly-anticipated trilogy fight will take place in front of a sold-out crowd at Sin City's T-Mobile Arena.
But Fury Sr. doesn't believe Wilder has any chance of beating his son because he is still very much in denial and 'cannot improve because of his mindset'.
Joshua, 31, recently lost his titles to Oleksandr Usyk on September 25 at the Tottenham Hotspur Stadium in London.
And according to Gypsy John, Wilder could do with picking up a few tips and tricks from 'AJ'.
"I got asked about Wilder being like AJ," Fury told The Sun.
"You could never compare the two men. AJ had dignity in defeat, he knows what’s gone wrong and he’s trying to put it right and he will do.
"The other one’s in total denial and has been talking absolute rubbish for the last two years.
"Tyson will know when to fight and when to box and I don’t think Wilder has the intelligence to cope with that on any level at all. Not knocking him it’s just the character he’s shown to me in defeat.
"How can you learn in defeat when you carry on like that?"
He continued: "The American people love Tyson and I love the American people but I like men amongst men, I like men to be men.
"I don’t want them to be like spoilt children in defeat. I admire men in defeat with dignity.
He’s [Deontay Wilder] still talking rubbish and that’s what puts me off him as a fighter and that’s why in my opinion he cannot improve because of his mindset.
"Look at Manny Pacquiao the other day. You didn’t see him doing that, blaming his costume, blaming his team, slandering world champions, giving professional people a bad name. You can’t do that, it’s defamation of character.
"Like I said before I would have had him in court, he would never have got a second fight but that’s politics and that’s out of my hands and like I said, I’ve got no control over it at all."