'The Body Snatcher' headlines at Wembley Arena on Saturday night as he faces Franklin, who is unbeaten in 21 bouts.
The WBC world heavyweight champion is regarded as one of the best heavyweights of this era, but Whyte has harshly claimed that he is "just a big guy".
"The Fury fight was a tricky one. I knew it was going to be a difficult fight because he's just so big," Whyte told Betfred's Lightweight Boxing Show.
"People say he's fast and a great boxer but he's not, he's just a big guy.
"In the fight, he just pushed me over because he's a strong guy. That's because he's so big, because I'm not a guy that gets pushed around easily."
Whyte has also hit out at Wilder, claiming that 'The Bronze Bomber' is the sport's "biggest fraud".
"This guy is an actor," Whyte told Sportsmail. "Everything he does is an act. Even fake crying at [the press conference after he knocked out Robert Helanius].
"I was just like, 'you just make me sick, you piece of sh!t.' I heard that Wilder still doesn't want to fight me.
"He is the biggest fraud in all of sport - never mind boxing. Who doesn't fight his No. 1 contender for four years and then claim he's the greatest of all time?
"He hasn't actually beaten anyone of note yet. He is just a cowardly con man."
If Whyte can get past Franklin, he is set to have a big year in 2023.
A bout against Anthony Joshua is already being discussed and it is hoped that the British rivals will face off in a huge rematch in the first half of next year.