British boxer Amir Khan has tweeted his support for former world heavyweight champion David Haye after the 33-year-old underwent re-constructive surgery on his shoulder.
Haye has been told to "seriously consider" ending his 11-year boxing career after the surgery.
David Haye has tweeted a picture of his injured shoulder which could force him into retirement.
Haye, 33, underwent surgery on Thursday to reconstruct his right shoulder which forced him to pull out of a scheduled fight with Tyson Fury, who reacted furiously to the news on Twitter.
The former world heavyweight champion said the operation was a "crushing blow" to his plans.
Former world champion David Haye underwent surgery on Thursday to reconstruct his right shoulder and has been told to "seriously consider ending his boxing career", Hayemaker Boxing said.
The Londoner has pulled out of his rescheduled February 8 fight with domestic rival Tyson Fury and looks set to end his career permanently after an unsuccessful operation last week.
"It's a crushing blow for me," he said. "I had big plans for next year and the ultimate goal was to win back the world heavyweight title, something my amazing fans deserve.
"What I didn't anticipate was that this year would be the unluckiest of my career and that a number of injuries would disrupt my plans so much.
"Perhaps it just wasn't meant to be. The boxing gods keep hinting that maybe enough is enough and that it's time to finally hang up my gloves."
David Haye has announced he will fight Tyson Fury on September 28.
Haye tweeted: "I've just signed to fight Fury on Sep 28, lets hope he finally agrees (and signs today) and he doesn't keep delaying."