SHOWS: LONDON, ENGLAND, UK (JULY 18, 2018) (REUTERS - ACCESS ALL) 1.

ANTHONY JOSHUA POSING 2.

PAN FROM BELTS TO JOSHUA AND POVETKIN 3. (SOUNDBITE) (English) HEAVYWEIGHT BOXER, ANTHONY JOSHUA, SAYING: "This is a new chapter.

I think I've got 10 years left in boxing and I really want to cement my legacy." REPORTER ASKS: "Do you really believe that? "Because I think now science, information and people have done it; (George) Foreman, Bernard Hopkins and my last, well my friend now, (Wladimir) Klitschko, went on till 40, (Floyd) Mayweather done it, so I believe I can as well." 4.

VARIOUS OF JOSHUA AND POVETKIN FACING OFF 5. (SOUNDBITE) (Russian) HEAVYWEIGHT BOXER, ALEXANDER POVETKIN, SAYING: "No, right now I'm thinking, I have a fight now with Anthony.

This is the most serious fight in my career so I am focused only on him." 6.

VARIOUS OF SIGN INSIDE WEMBLEY STADIUM READING (English): "JOSHUA POVETKIN" STORY: Britain's Anthony Joshua on Wednesday (July 18) told reporters he intends to cement his boxing legacy and hopes to compete in the heavyweight division until he's 40.

The 28-year-old will defend his WBA 'super', IBF, and WBO heavyweight titles against Russian Alexander Povetkin at Wembley on Sept. 22.

Joshua takes on his WBA mandatory challenger Povetkin as he returns to Wembley for the first time since his victory over Wladimir Klitschko in front of 90,000 fans in April 2017.

Waiting in the wings is a potential title unification bout against America's WBC world champion Deontay Wilder.

That could take place in April, after the 28-year-old announced a two-fight contract in Wembley while at the stadium via promotions company Matchroom Boxing on Monday (July 16).

American fighter Jarell Miller gatecrashed a promotional news conference for Joshua and Povetkin in New York, US on Tuesday (July 17), squaring up to the Briton on stage.

But before any other potential fights, Joshua must first defeat Povetkin.

The 38-year old Russian has an impressive record but has been a subject of controversy after failing two doping tests, testing positive for banned substance Meldonium in 2016 and Ostarine in 2017.

In November 2017 the WBC sanctioned his return from his boxing ban.

He told Reuters he denies using performance-enhancing substances.