“It is something I am enjoying as an athlete, a person and boxer,” he said.

Fury, who beat Wladimir Klitschko to win the WBA, IBF and WBO world titles in 2015 and claims to be the lineal champion, added: “I really love my job at the minute, more than I have ever done before. I used to think boxing was a chore, a job to go to.

“I trained hard for a fight and then put a ton of weight back on. Now I enjoy what I do, keep fit even when I am not boxing. I almost live my life as a routine training camp now.”

Wilder faces fellow American Dominic Breazeale on 18 May, while WBA, IBF and WBO champion Anthony Joshua takes on American Jarrell Miller in New York on 1 June.

Fury is unbeaten in his 28 fights, while 24-year-old Schwarz – ranked number two in the world with the WBO – has 24 wins from 24 bouts.

“It’s been a long time coming,” said Fury. “I have never been to Vegas. The big fights happen in Vegas. I remember waking up to watch Ricky Hatton and Floyd Mayweather [in 2007] at the MGM. A lot of iconic fights have been there so for me to put my name down on that list is another tick off the list.

“I made a promise to myself when I was younger I wouldn’t go to Vegas until I fought there. Thirty years later I get the opportunity to fight on the biggest platform in the world.”

Speaking about his 6ft 5in opponent, he added: “He is hungry and ambitious, and I am sure he will come for a war.

“He is not ill-preparing for this and turning up for a pay check. He is turning up to take the lineal championship of the world. It will be an epic fight – it’s Las Vegas, it’s showtime and I will look to put on an explosive performance in the States.”