Mike Tyson could return to the boxing ring after being offered $1m to fight All Blacks legend Sonny Bill Williams.
The former heavyweight world champion, who has got himself back into tremendous shape, is training for a boxing return at the age of 53.
He intends to compete in exhibition bouts, 15 years after hanging up his gloves following a defeat by Kevin McBride.
Australian boxing promoter Brian Amatruda has revealed he intends to set up a fight between Tyon and Williams, who amassed an impressive 7-0 record over six years as a professional.
"I’d hold it at Melbourne Arena where we’d get over 10,000 or even Princes Park where they got 30,000 for Jeff Fenech versus Azumah Nelson.
"He might be 53 years old but he’s still a huge name and any of those blokes, [Barry] Hall, [Paul] Gallen or Sonny Bill would jump at the chance to get into the ring with him.
"I’d make it part of a card with a world title fight for Tayla [Harris] on it. It would be enormous. Not just a fight, it would be an event."
The centre, who won back-to-back World Cups with the All Blacks in 2011 and 2015, recorded his most impressive victory in the ring to date against former world champion Francois Botha in 2013.
Other multi-sport rugby players
1. Sonny Bill Williams - Rugby and Boxing
A New Zealand international in rugby league, rugby union and rugby sevens, as well as an undefeated professional boxer.
2. Eric Liddell - Rugby and Athletics
He not only played rugby for Scotland, winning seven caps between 1921 and1923, he won the 400m gold medal at the 1924 Olympics in Paris. Famously refused to run in the 100m heats, which were held on Sunday due to his religious beliefs as shown in the 1981 film, Chariots of Fire.
3. Gerwyn Price - Rugby and Darts
n 2017 he was the runner-up at the UK Open, Price's first major event final. Price has also played rugby union for Welsh Premier Division sides.[
4. Israel Dagg - Rugby and Cricket
An All Black wing/fullback who was a Black Caps prospect as a pace bowler.
8. Hayden Smith - Rugby, Basketball and American Football
An Australian-born USA international lock who played for Saracens. He had trained with Australian NBL side the Sydney Kings before taking up a scholarship to play basketball at the New York Institute of Technology and Metropolitan State University of Denver. He later signed with NFL side the New York Jets as a tight end in 2012.
9. Nate Ebner - Rugby Sevens and American Football
A former Kenyan sevens representative who played as a lock/loose forward in the Currie Cup, ITM Cup, and Super Rugby before signing with the Indianapolis Colts in the NFL as a linebacker.
11. Alastair Hignell - Rugby and Cricket
After leaving university, he continued playing rugby for Bristol and England in the winter, while also working as a teacher (including at Bristol Cathedral School and Sherborne School), and cricket for Gloucestershire in the summer.
12. John Hopoate - Rugby and Boxing
After multiple suspensions forced him to retire from rugby league, he pursued a career in boxing, eventually becoming the Australian heavyweight champion.
13. Perry Baker - Rugby and American Football
A USA sevens international who played football at Fairmont State University and in the Arena Football League before taking up rugby union.
A retired rower, 2000 Olympic Gold Medalist who also played lock for Waikito.
15. Darren Clark - Rugby and Athletics
He was an Australian retired sprinter who specialized in the 400 metres before taking up rugby.
16. Jeff Wilson - Rugby and Cricket
Talented sportsman Jeff Wilson chose to represent New Zealand at rugby over cricket. Wilson played for the All Blacks 60 times between 1993 - 2002. He played six ODIs for the New Zealand cricket team, before choosing to focus on rugby.
17. Gavin Hastings - Rugby and American Football
He was Scotland’s granite-hard talisman for a decade, not only as the last line of defence but as a place kicker of unerring accuracy who often proved the difference between sides.
Smith was a cricketer who was captain of Oxford University Cricket Club (1956), Warwickshire County Cricket Club (1957–67) and the England cricket team (1963–66). He was one of England's most popular cricket captains and, as he also played rugby union, Smith was England's last double international.
19. Heather Moyse - Rugby and Bobsleigh
A Canada international in rugby union, both in 15s and sevens, and winner of a gold medal at the 2010 Winter Olympics in two-woman bobsleigh.
20. Luke Gross - Rugby and Basketball
A USA international lock who played basketball at Marshall University before switching to rugby union.