IBF, IBO, WBA, WBO heavyweight champion Anthony Joshua believes that he's capable of stopping WBC champion Tyson Fury in the first six rounds.

Joshua and Fury are almost in line to fight each other in 2021.

The two champions have already agreed on a 50-50 deal when it comes to the financial terms.

A big stumbling block was removed this past Saturday night in Brentwood, where Dillian Whyte was knocked out in the fifth round by Alexander Povetkin.

Whyte was the mandatory challenger to Fury. The title shot was due by February 2021, but unexpected defeat has effectively removed Whyte from that position.

Now Fury and Joshua have to win their respective upcoming fights.

Joshua has a mandatory defense against Kubrat Pulev, which is targeted for December. And Fury is heading in the direction of a trilogy fight with Deontay Wilder, with a working date of December 19.

"I have a lot of respect for the man, he's a good family man and a good fighter, but on the other hand, I want to break his head," Joshua said curtly while appearing on Sky One's A League Of Their Own.

Joshua was impressed by Fury's domination of Wilder back in February, but the British star believes that he's faster and a better overall fighter than Wilder.

He expects to take Fury out in the first half of the contest.

"First six rounds, I think, well I know I'm going to take him out then," Joshua said.

"I have had a shorter career, so I'm fresher. I've been in the deep end longer so I can handle the pressure and I believe I'm going to take him out. Fury drew the first and then rejigged his game plan and took Wilder out and schooled him really but I think I'm faster than Wilder anyway, call it what you want, I believe I'm better."