Anthony Joshua will knock Oleksandr Usyk out in their rematch this weekend.

That's the view of AJ's mate Derek Chisora, who was impressed by what he saw from his old pal during the open workout.

Joshua faces Usyk in Saudi Arabia with his old IBF, WBA and WBO world heavyweight titles up for grabs.

The Ukrainian is the favourite with the bookies having his whole professional career of 19 fights without defeat.

ALL THE INFO: Anthony Joshua vs Oleksandr Usyk 2: Date, Card, UK Start Time, Ring Walks, Tickets, Live Stream, Odds and More

However, Joshua has made changes to his coaching team following his defeat last September in London, as he looks to reclaim his belts.

And Chisora is expecting an explosive finish in Jeddah on Saturday night.

Speaking on talkSPORT, he said: “From what I saw from AJ, the way he was chucking his shots from the new coach, with the whole team he’s set around for his new fight, I can guarantee that AJ will be winning via knockout.

Anthony Joshua and Oleksandr Usyk go head-to-head in Saudi Arabia on Saturday

“If we don’t win the World Cup it doesn’t mean we have to come out of the World Cup or not play football any more.

“It’s just the way of life, you win some, you lose some. If you get divorced you marry another woman! What’s the problem?!

“Him winning would be amazing, him losing would be dreadful for us and then we have to build him back up again to fight again.”

Like Chisora, Dillian Whyte also reckons Joshua will emerge victorious as he urged him to be more aggressive in the rematch.

“I do expect him to bounce back, he’s a British fighter like me and I only support our own, so I do hope he gets the job done," Whyte said to Sky Sports.

“It’s good for me if he wins as well.

“I can understand that [rediscovering his aggressive side], because I’m of the same mindset as well. It’s good for me if he wins as well.

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“I think it’s the right mindset he needs going into the fight, it’s the only way he wins the fight.

“When we fought, we fought twice, both fights we had there was a lot of aggression between me and him in the fight, that’s the difference between fighting me and fighting Usyk, that aggression wasn’t there.

“He was sort of trying to outbox someone who has been boxing for 25/30 years.

“I believe if he revisits that aggression he had for me he does a much better job and probably beats Usyk and knocks him out this time.”