Such is his confidence in winning world heavyweight championship rematches, Oleksandr Usyk is already focussed on the fruits which will come from the laborious task of defeating Daniel Dubois for a second time this summer at Wembley Stadium.

Usyk (23-0, 14 KOs), The Ring, WBC, WBA & WBO champion, is in London to promote his July 19 undisputed clash with Dubois (22-2, 21 KOs), the IBF belt-holder, which comes 23 months after the Ukrainian first stopped the Brit in nine rounds at Poland's Wroclaw Stadium.

Early on Monday morning, Dubois and Usyk met by the side of the national stadium's pitch, a photo-op which ended in the former shoving the latter, but now the pair are completing their various media duties on the opposite side of the capital.

After leaving a number of passersby open-mouthed and wide-eyed on his saunter from London Bridge's News UK building to the hotel across the road, Usyk, in a typically jovial mood, interrupts a roundtable between a cohort of British boxing's written media and Dubois' legendary promoter Frank Warren.

While Queensberry Promotions chief Warren is holding court, and in the middle of describing just how Dubois will unseat the heavyweight division's king, Usyk, dressed down in a baby blue team tracksuit, sneaks up behind the 73-year-old and taps him on the shoulder.

"Where is my car?" Usyk asks, to which Warren replies: "I told you, horse and cart if you lose. Car if you win."

"Bentley," Usyk retorts. "I will win. What is Bentley model...Bentayga, great car."

Warren jokes that he'll only shell out for a Bentley T-Series four-door saloon from the 1970s.

Usyk's long-time manager Egis Klimas says: "Frank, If I were you, I would give him a car today already."

The confidence isn't unwarranted. Of course, Usyk's persona is one made up of humour and humility, but with over half of his 23-fight career being fought for world titles, none of which have ended in defeat, the hubris is only natural.

Warren knows the order Dubois has in front of him is tall. But he is still also of the belief that the victory should have been awarded to Dubois on that night in Poland.

During the fifth round of their WBA, WBO and IBF title bout, Dubois landed a hard right hand to Usyk's midriff which the 38-year-old went down and writhed on the floor in pain from. Referee Luis Pabon called the shot low and as a result, Usyk was given around four minutes to recover. Three rounds later, Dubois touched the canvas himself, and after suffering another knockdown in the ninth, the contest was waved off.

Warren, armed with evidence, A4 print-offs he'd been given earlier in the day, points out the shot, in his opinion, wasn't low at all.

"I don't care what anyone says, these punches are not below the belt. The rule says the navel, that's the sequence of punches," he says while pointing to the physical copies.

"I mean, that moment in that fight, normally a guy gets caught with a low blow, they don't get a four minute break or three minutes and 50 seconds.

"Even when he wanted a fight on, the referee, he said 'no, take more time'. But it got to him and [Dubois] moaned a bit, he wasn't happy, I said 'f--k the referee'.

"In these fights, at this level, when you're in the other guy's backyard in Poland, which has a big Ukrainian presence, when you're in there, that's your referee, that's your judge'," Warren adds while pointing to his fists.

This time around, Warren has no doubts, that after knockout victories over Jarrell Miller, Filip Hrgovic and Anthony Joshua, the last of which also took place at Wembley in front of 90,000 fans, Dubois will blow Usyk away in a manner AJ and Tyson Fury were unable to do in their rematches with the undisputed champ.

"He will knock him out, he'll stop him," Warren says.

"He has to be the boss in this fight. He's got to go and impose himself. He's got to do what I know he can do. He's got to go and be hurtful from the start. And he's got to go out there and he's got to absolutely push this fella back.

"He's 30 percent of the fighter he is [on the backfoot]. You push him back and he's not the same fighter. That's what he's got to do."