Tyson Fury wants to finish Arslanbek Makhmudov with a "brutal knockout" to prove he is back to his best.
After retiring for a year following his second defeat to Oleksandr Usyk, Fury is returning to boxing against Makhmudov .
He based himself in Thailand for the bulk of his training camp for this fight and is adamant he will be revitalised for his comeback.
"It's just doing what I already did in the past but bringing different stuff back to life that I haven't been doing lately - if a 37-year-old Tyson Fury can do what a 27-year-old Tyson Fury did back in the day. And so I'm really putting things together honestly," he told Your Site.
"I want a brutal knockout over Makhmudov. It's going to be fun."
Former heavyweight champion Joseph Parker has been in camp with Fury. He told Your Site: "The training here is very difficult and very hard. I'm very happy to be here because I'm actually growing as a fighter myself.
"But to see him perform in the ring against sparring partners and smash everyone up, he caught me with a few shots there as well, it's very good to see and he is in tip-top shape. I can't wait to watch him fight."
Fury insists his time out of boxing has fuelled his motivation further.
"When you start out you want to make money, you want to get a house. You want to get all them things. But after all that you do it because you love it," Fury said.
"I'm in a position where I do it because I love it, not because I have to do it or I chose to do it financially. I do this now because I'm in love with this game passionately. And having 16 months out the ring, having a year away, makes me even more fonder."
He added: "It's incredible what an individual can achieve. The most unlikely individual being myself, fat boy, clumsy, from the north - world heavyweight champions are never from the north of England. Unlikely, unlikely, unlikely champion.
"I changed my stars, changed my life and I did everything I ever wanted to do and continuing to do it."