Anthony Joshua has vowed he will not become an old man in the boxing ring, stating he has "five years left" in his career.
Britain's WBA, IBF and WBO heavyweight world champion is set for a unification fight with WBC belt holder Tyson Fury this year.
Details have yet to be disclosed of exactly where and when that two-fight series will happen, but it is poised to be a major moment in the career of both men, given the stakes involved.
Joshua is at that stage of his career where he is already a global star but where such fights matter in defining his legacy.
That is what he will look to achieve before hanging up his gloves, with the 31-year-old having shaken off the disappointment of a first professional defeat in 2019, when he lost to Andy Ruiz Jr.
Speaking to Sky Sports News, Joshua said: "This isn't the start of my career. I'm coming towards the end of my career.
"I'm not someone who lives in the moment and thinks that everything is just like for now. I'm always planning ahead so I'm coming towards the end of my career.
"Five years left and that's basically an Olympic cycle. I've got an Olympic cycle and a little bit more left, so when you see the next Olympics happen is when I'll be coming to the end of my career and the next generation will be coming through."
Joshua beat Kubrat Pulev in December to keep a grip on his belts, allowing plans for the Fury bout to remain on track and progressing to a 24-1 career win-loss record.
A two-fight deal with Fury, who dismissed Joshua as a "chump" on social media on Thursday, was said to have been verbally agreed in the weeks after the Pulev fight.
Joshua's promoter Eddie Hearn said the first instalment could happen in the Middle East unless stadiums are again allowed to be filled to capacity in the United Kingdom, currently a distant prospect amid the coronavirus pandemic.