Tyson Fury and Oleksandr Usyk’s fight has been rescheduled to May 18Credit: Getty

Johnny Nelson claimed Fury was struggling in sparringCredit: PA

But the historic undisputed bout was postponed to May 18 after he suffered a cut in sparring that required over ten stitches.

In the build up to the fight, rumours were rife that the Gypsy King was struggling in sparring.

Cruiserweight champion Jai Opetaia had allegedly floored Fury while retired boxer-turned pundit Johnny Nelson claimed he was being “turned over.”

But the speculation was slammed by Fury’s manager Spencer Brown, who gave a sarcastic response when probed on the rumours.

Brown said on iFL TV: “It beggars belief. We were looking at some of it and laughing our heads off, these conspiracy theories.

“It was actually very funny, some of the c**p that’s coming out, there’s old Johnny Nelson, he’s got a mole in our camp.

“We’ve been digging holes everywhere because there’s a mole there somewhere.

“We’ve got a geezer out with a shovel digging holes trying to find the moles.

“All sorts is coming out. There’s a grass in the camp, an informant, it was like Colditz.

“All we needed was a Gestapo to find the grass, but we never found them.”

Brown then joked: “Whoever was grassing couldn’t have been a very good grass, because he got it all wrong!

“Because I’m going to tell you now, Jai Opetaia knocking Tyson out is like Mount Vesuvius falling down on an afternoon.

“It just didn’t happen, it didn’t happen. It didn’t even get anywhere near happening, Tyson was on fire.”

Usyk, 37, had set up shop in Valencia, where he missed the birth of his baby daughter Maria due to being in camp.

Meanwhile Fury, 35, was in Riyadh from the new year and Brown conceded that information would have got back to Usyk in some form.

He said: “Of course there’s somebody. I don’t think it’s malicious, I think it’s just somebody… pillow talk, few white lies flying about.

“A few misconceptions, that’s what it is, pillow talk. I don’t think there’s a grass, we know in all camps you can’t spar the best everyday, can’t spar the best everyday, it’s physically impossible.

“But I saw him and he was electric. He was the Tyson I haven’t seen in a long time. It was unbelievable.”

Fury with his manager Spencer BrownCredit: @spencerbrownmrgoldstar