Deontay Wilder fears that Tyson Fury has decided to hire legendary coach Freddie Roach.
Fury has taken Roach and British boxing legend Ricky Hatton into his corner for his first December meeting in Los Angeles.
They will support rookie coach Ben Davison, who took on Fury uncle Peter for his summer comeback against Sefer Seferi.
And Wilder believes his rival's decision proves he's only nervous for two weeks before battling for the American's world title.
He said, "I want him to get the coach he thinks he can get the most out of Tyson Fury because I want him to do his best, I'm tired of fighters making excuses.
"I'll knock him down, I'll beat him, he says no man in the womb will beat him, why does he shit with all those coaches?"
"This is the biggest fight of his life so far, and if I were him, I would try to reach all the resources when dealing with one of the most dangerous men in the boxing game.
"I would have been happier with Peter, that's who he really needs, his only name was Klitschko, but Peter was the one who was with him, Peter knows him inside out.
"In this short time [new trainers] will not get to know you. If you get several coaches, it's nervous. "
Tyson Fury has Ricky Hatton and Freddie Roach for Deontay Wilder in his corner
Roach dominated Manny Pacquiao's illustrious career, while Hatton helped Lucas Browne win a heavyweight world champion.
And Wilder fears the illustrious duo could disable inexperienced Davison.
He added, "I like Ben as a person, I do not know about him as a coach, I do not know his level, we've never heard of him, but that does not mean anything, you can have an unknown, the biggest one alive
"It all depends on how Fury takes it, it can work for him, because more brains are better than one, but it could go against him because there could be too many chiefs, all except Eg, all have ego new and that's his first big fight.
"Although he's a head coach, he could go back a few steps for these experienced coaches, which can be an advantage or a disadvantage."
Wilder vs Fury will be broadcast on December 1 at the BT Sport Box Office.