Britain's David Haye is holding out hope of a rematch against Wladimir Klitschko after his points defeat by the Ukranian in Hamburg on Saturday.
Klitschko's manager has ruled out the possibility, but Haye believes a second fight would make sense for both camps.
"I'd love the opportunity to challenge for his titles," Haye told the BBC.
"Once he realises there's no other fighter in the heavyweight division that can generate as much interest as me, maybe he'll come back and say OK."
The Londoner battled for the full 12 rounds before losing by a unanimous decision after the three judges scored the fight 117-109, 118-108 and 116-110, all in Klitschko's favour.
Haye later revealed that he was troubled by a broken toe suffered three weeks before the bout, but has since admitted that his 35-year-old opponent "was just too good for me".
The result was that Klitschko added the WBA title to the IBF and WBO belts he already held, while the one remaining heavyweight strap - the WBC - is in the hands of his brother Vitali.
Haye is only interested in meeting a Klitschko before his planned retirement in October and, with the brothers refusing to fight each other, the Englishman is their only obvious opponent.
Their manager Bernd Boente branded Haye a "sour loser" after Saturday's defeat, but the 30-year-old said he is the only man who can bring the Klitschkos big money and interest.
"They're the two big fights out there for me; they hold all the world title belts now," Haye stated. "So if it's not one of those, then that's it. I always aim my goals as high as possible.
"As much as he [Boente] doesn't like me, his fighter has earned five times more than he's ever earned before in his life. We've got to wait for the numbers to come in but whatever it is, it's not bad for a night's work.
"He [Wladimir] said he would knock me out but didn't do that. He hit me with his best shots and he couldn't put me down.
"He's a lot bigger than me and said he really wished he had knocked me out, but he couldn't do it. So maybe he'll want the opportunity to knock me out and finish my career.
"Every boxer wants the opportunity to fight for the unified title and fighting him would bring that. He's the main man and I'd love another opportunity. Whether or not he gives me one remains to be seen."
Haye felt he "let a lot of people down" and is ready to face any flak that comes his way.
"When someone hypes the fight up, when someone talks as much trash talk as I do, when it doesn't go your way you've got to expect people to put the boot in," he reflected.
"Feel free to have a pop at me. I give it the big talk, I talk the talk, and on Saturday night I didn't walk the walk. You've got to take the rough with the smooth.
"You can't just take the accolades when it's going well - when it isn't going well, when it doesn't go your way, you've got to take the lumps."