Back in 2012 in Munich, Derek Chisora made an attempt to capture the WBC heavyweight title from dominant champion Viatli Klitschko.
Chisora lost a hard fought twelve round unanimous decision, but he gained a lot of respect as he was able to take everything Klitschko threw his way. Klitschko was well known for his hard punches, but couldn't put a dent into Chisora.
That fight was best known for the post-fight press conference, when Chisora and David Haye were involved in a violent brawl. They would eventually end up facing each other, with Haye winning by knockout in five rounds.
Ironically, the two are now close business partners - as Haye manages Chisora's career.
And, Chisora is going to fight Klitschko's countryman, former undisputed cruiserweight champion Oleksandr Usyk, who is taking part in only his second fight in the heavyweight division.
The fight was scheduled to take place this month in Manchester, but it was pushed back due to the ongoing coronavirus pandemic.
There is no concrete information on when or where that contest will take place.
Haye believes Chisora is a much better fighter now than he was back in 2012 against Klitschko.
"Derek boxed really well," Haye told Sky Sports. "He put the pressure on Vitali, who never hurt Derek.
"Derek forced the fight and did well. He lost, but it was a spirited effort that he got a lot of credit for.
"The Derek of today is fitter and more disciplined. At the time he was unruly, did whatever he wanted, but didn't live the life of a consummate professional. He was just tough enough, slapping and spitting."