Tyson Fury has rediscovered his motivation and is ready to beat Wladimir Klitshcko for a second time in the first defence of his WBA Super and WBO world heavyweight titles. The Briton had previously threatened to retire after defeating Klitshcko last November, but is already training ahead of the 9 July rematch in Manchester.

Fury defeated the Ukrainian Klitschko on points in Dussledorf to shock the boxing world and reach the summit of the heavyweight division, but must repeat that feat should he wish to remain on course for unification bouts with fellow Brit Anthony Joshua or American Deontay Wilder. The Bolton-born fighter is not feeling under pressure to reproduce the victory and says he is working harder than ever to prepare for the bout.

"My desire is back," he said according to Sky Sports. "I've got that fire back in me. It's not the desire to go and win belts, but it's a desire to keep them. They are mine. I won them. All the pressure's on me but you know me, I don't bother with pressure – it's nothing.

"I've got one foot in the pressure cooker, the other one in the frying pan. A little bit of boxing pressure is nothing to me. I will be walking out to 20,000 people cheering me and I've already been in a big 40,000 venue before out in Germany, so big arenas and big things are what I was born to do.

"It's like I've said before; I've been training hard. I can't train any harder but I can train just as hard and I am just as hungry because I want to keep those belts. I've got to work as hard as I've ever done and I have to put as much dedication, determination and desire into it."

A second win for Fury would raise the tantalising possibility of a clash with either Wilder or Joshua before the end of the year. The IBF and WBC champions face defences of their crowns in the coming months, with Joshua facing a to-be-named opponent on 25 June while Wilder travels to Russia to take on Alexander Povetkin on 21 May.

And Wilder says he would be prepared to fight abroad again, potentially in the UK, in a fight to unify the division should he overcome Povetkin. "All the things I've done up to now, that will be the icing on my cake to be the undisputed heavyweight champion of the world," he said.

"I won't stop, no matter how many hours I have to put in. No matter how many fights that I have to take. No matter how many countries I have to visit to defend my title. I will be the undisputed heavyweight champion of the world.

"Like I said before, it's easier for me to fight here in America but that's not what it's all about to me. When I have a title that says the heavyweight champion of the world, I want to travel all over the world to defend my title. I'm living my dream, I'm getting an opportunity to do that with this fight. I'm looking forward to Russia and I want to tell Russia: 'Here I come.'"