Wladimir Klitschko's manager said the former heavyweight world champion would still be capable of boxing in his 50s as he prepares to make his comeback this month.
The 41-year-old will step into the ring to do battle with IBF and WBA super heavyweight champion Anthony Joshua at Wembley on April 29.
Klitschko has not fought since he was astonishingly beaten by Tyson Fury in Dusseldorf back in November 2015 and is eager to make up for lost time.
And the veteran Ukrainian's boss, Bernd Boente, does not believe the end is nigh for the two-time world champion.
"If you're 41 years old, you can't expect that someone is fighting another 10 years, but he always said that Bernard Hopkins is one of his idols - and you know how long Bernard fought," Boente told Sky Sports.
"I don't know if Wladimir will still fight at 50, but one thing is for sure, he's not looking at this fight [with Joshua] as his last fight.
"For the last five or six years, Wladimir has never discussed how long he fights. It's fight by fight and then he makes a decision.
"At this moment I can tell you he's in fantastic shape and he's physically and psychologically on a top level. He's absolutely looking forward to this fight."