Boxing promoter Eddie Hearn insists Tyson Fury has lost his head and doesn't have the hunger to compete at the top level for heavyweight titles.
Fury was set to face Deontay Wilder in a rematch but could not agree a fight.
The Gypsy King has signed deals with TopRank and will record a Christmas single this year.
"Listen Tyson's [Fury] on a roll right now, he's going for it," he said, speaking to IFL TV. "He's got a Christmas single coming out, he's doing WWE wrestling - his heads gone completely but he's absolutely living life, so good luck to him. I think he's packing up boxing, I really think that he's looking at it and thinking, "I've made a nice few quid over the last few fights, I'm enjoying life"."