Tyson Fury has vowed to prove he is better than ever when he starts his comeback on June 9.
The former IBF, WBA and WBO champion will return to action after almost three years out at the Manchester Arena against an opponent who will be confirmed next week.
He also insisted he is not driven by the prospect of fighting Anthony Joshua and Deontay Wilder, the two reigning world champions.
Doubts persist over whether Fury can reproduce the kind of form which saw him outpoint Wladimir Klitschko to win his world titles in November 2015.Fury has had issues with drugs, mental health and his weight since he beat the Ukrainian.
It was confirmed on Tuesday that his comeback will be broadcast exclusively on BT Sport, which could prove a significant obstacle to a potential future fight with Joshua, whose fights are shown on Sky, but he said: "My motivation was never to come back and fight X, Y and Z.
"It was to come back and box for me. My ambition is to get back in the ring and have fun again because I'm most happiest when I'm in the boxing ring."He's done very well, I'm very proud of Anthony Joshua and the way he has changed his life around.
"You can only respect someone who has got the determination and drive because nothing is ever given to you in life, you have to fight for it."I feel better than when I beat Klitschko.
"Even when I won the title it didn't really mean anything to me.
"But you are going to see the best Tyson Fury, vintage.
"When Muhammad Ali fought George Foreman on the comeback, no-one gave him a prayer. But we all know what happened."