Warren also said: "Until anyone beats Fury they can not rightfully call themselves the world heavyweight champion because he didn't lose his titles in the ring".
Brash "Gypsy King" Tyson Fury has just announced his comeback bid will be happening this year, having just signed a multi-fight deal with big shot promoter Frank Warren as he looks to put doping scandals and personal issues behind him.
Warren, though, believes Fury needs "three or four fights" before being ready to take on Joshua.
Fury has not boxed since he dethroned Wladimir Klitschko back in November 2015 to claim the IBF, WBA and WBO titles on an unforgettable night in Germany.
GETTYAnthony Joshua beat Joseph Parker to claim a third world title
Joshua profited heavily from the stripping of Tyson Fury, with the lost belts being made vacant.
While away from the sport, Fury piled on the pounds but in recent photographs and social media video looks slimmer.
Fury was sensational in ending Klitschko's nine-and-a-half year reign with a shock points win. "He's unsafe until the last two seconds". Timing, reflexes, everything is better than it's ever been.
Meanwhile, fellow Briton Anthony Joshua holds the IBF, IBO, WBA and WBO titles, while unbeaten American Deontay Wilder holds the WBC belt.
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Martinez would have preferred Boston retaliate right there and not given Austin any thought that he was getting away scot-free. Whether or not that is true, Ben Maller thinks it is clear that the Red Sox can not count on David Price . "Grab his jersey.
Another long road awaits Fury and it will be interesting to see what kind of shape he's really in come June 9 at the Manchester Arena. He's going to be busy, he needs some rounds under his belt.
Fury said Joshua would be no match for him.
"He only needs one punch - and unlike AJ he has got the speed and agility to throw them from anywhere".
"This is a fight for depression, for mental health problems".
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"You have to go back to the drawing board, chop everything down and live the dream again - that's what I'm doing now".
"Fury's return adds even more intrigue to the heavyweight division and no doubt, given his past, he will be fast-tracked to the big fights", said William Hill spokesman Joe Crilly.
"I've got to congratulate the fella, he's done very well", he told a press conference in London.
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