One of Dillian Whyte’s chief sparring partners, Jermarcus Polain says he has seen the Brit improve in training camp and expects him to exact revenge in his rematch with Alexander Povetkin.

Whyte finally faces Povetkin again in Gibraltar on Saturday night, following three delays.

The 32-year-old will attempt to regain his position as WBC Interim Heavyweight champion, after suffering a shock fifth round knockout loss to the Russian in August.

Unbeaten American, Polain was drafted into Whyte’s Portugal training base alongside the likes of Mateus Masternak and Eric Pfeifer to help prepare him for his crunch rematch and the Georgia native insists Whyte has improved over the course of the camp.

“They call him the Body Snatcher for a reason,” Polain told Pro Boxing Fans.

“It’s amazing how much power that this guy generates. He’s very strong and he’s growing daily.

“Just to see him from afar as an up-and-coming kid in the game to actually being side-by-side training with him, I’ve seen such a growth in him in that period alone, but man he’s coming along very good, he’s going to be ready.”

Whyte was seemingly in control of the first fight, knocking down the former world title challenger twice in the fourth round, before succumbing to a devastating uppercut in the fifth round, which left him out cold.

However, Polain does not see a repeat result on Saturday night.

“I see my man [Whyte] putting this guy [Povetkin] down,” the 28-year-old added.

“I believe in him 100%. I’m confident in what he’s going to do.

“This is a game of a puncher’s chance. Anybody can do what happened [in the first fight] and we know of course he was looking extremely well that night and in my opinion was winning the fight up until the shot.

“With that being said, I expect the same thing. Dillian’s going to come out and look great and I definitely see him being victorious on the night of March 27.”

Asked if he thought the fight could go the distance, Polain added: “Honestly I just don’t see it.

“But, Dillian is definitely prepared to go 12 rounds. He’s in shape, he can do it.”