It is never easy for an athlete to draw the final curtain on their sport, especially someone as successful as Floyd Mayweather.
The multi world-champion across five weight classes compiled a perfect 50-0 record (27 by KO).
He had called time on his illustrious career more than once, only to be drawn back to the ring, with the latest occasion being in August of last year against UFC champion Conor McGregor.
The legacy of being a champion means that there are still those who want to test their wits against you.
Amir Khan is the latest in that category.
The current welterweight has made no secret of his wish to fight a big name and has mentioned the names of Mayweather and Manny Pacquiao as possible opponents.
Mayweather himself has been linked to yet another comeback, this time against his old rival Pacquiao, who he defeated on points in 2015.
Mayweather is keeping his cards close to his chest in that regard, but had some thoughts regarding the wishes of Khan.
Boxing News and Views reported as saying: “Amir Khan is a pretty cool fighter.
"This is a guy that claims he’s been chasing me, but there’s a couple of guys that he couldn’t get past that I got past in flying colours.
"A lot of these young fighters are constantly calling me out, constantly chasing me.
“Like I said before, there are talks about me coming back to the Octagon, there are talks about me and Manny.”
The man affectionately known to his fans as 'Money' wears another hat as a boxing promoter, therefore he is always looking for a major deal.
There are so many twists and turns in boxing, sometimes deals are done and then off the table in the blink of a eye.
Many boxing fans would love to see a rematch between Floyd and Manny to decide once and for all who is the better side, especially with the latter claiming he was suffering from a shoulder injury.
While it appears that Amir Khan faces an uphill battle to convince Mayweather to fight him, in terms of Floyd's fighting future, it appears the door is never closed completely.