"At the same time, I'm fully focused on preparing for a tough opponent and making sure I'm the best version of Tyson Fury going into fight night," he added.
"It's the start of a huge second half of the year for me."
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The prospective heavyweight blockbuster has drawn significant interest from Saudi powerbroker Turki Alalshikh, sparking speculation that the eventual Fury-Joshua match could take place in the United States.
"I'll knock him out for sure," Fury told FurociTV. "He will not be able to survive against me.
He does not have any chin and I will bang him on it because I am quicker than him and I am a better boxer."
Fury criticized Joshua's recent durability, contrasting his performances with those of other heavyweights who fought Daniel Dubois.
He noted that Dubois' last five opponents included Oleksandr Usyk, Jarrell Miller, Filip Hrgovic, Joshua, and Fabio Wardley, and only Joshua went down multiple times.
"The only sucker to go down five times or even once was Joshua," Fury stated.
He also remarked that Saudi financing has streamlined the promotional process, removing traditional obstacles posed by promoters.
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Eddie Hearn had previously announced in April that Joshua signed the contract to face Fury, resolving long-standing promotional obstacles.