Wladimir Klitschko has arrived in London ahead of his heavyweight title fight with Anthony Joshua on Saturday night.
The former two-time heavyweight champion was pictured getting off a private jet at London's Biggin Hill Airport on Wednesday afternoon.
Klitschko is aiming to become a three-time world heavyweight champion in his first return to the ring since his defeat to Tyson Fury in November 2015.
He will fight undefeated Joshua in front of a British boxing record crowd attendance at Wembley Stadium with the WBA and IBF belts on the line.
The WBA have also decided to commemorate the occasion with a special belt. The pair will also fight for a personalised 'super champion' belt with engravings of them both.
Klitschko has admitted Joshua is the "biggest and strongest" fighter he has faced yet, but he is not considering the prospect of defeat, warning that the fight will be "Klitschko reloaded".
The Ukrainian, who has had 68 fights since turning professional in 1996, told Sky Sports: "On Saturday night I am going to face my biggest challenger, my strongest challenge. Did you see those muscles?
"Did you see this guy, how dangerous he looks? What he's capable of doing, knocking out everybody.
"Eighteen guys tried to conquer him, but they didn't, and he did his job, he did it well."
But he also added: "There is nothing, even considered in my mind - that I'm not going to make it."
Klitschko, 41, will be in his 29th world title fight against IBF champion Joshua, who is 14 years younger, and he believes that he has identified a weakness that will see him defeat the British fighter and give Joshua the first professional defeat of his career.
"We know each other, we have sparred enough rounds to know what to expect from each other," he said.
"I have seen something that I'm going to use. Yeah, you might use it, you might not use it, because at the fight night things are going to be different.
"It's not a sparring session, it's a fight night."