Sonny Bill Williams is a man of many talents.

He's already succeeded playing rugby, league, and in the boxing ring, collecting trophies and medals everywhere he goes.

Now he has turned his attention to sevens, hoping to star as New Zealand goes for gold at the Rio Olympics.

But once that's over, his calendar is clear.

Here are five things he might turn his hands to.

READ MORE:

* SBW tipped for NRL return with Roosters

* Sonny Bill Williams meets his match in sevens guru

* Flood of online support for Sonny Bill Williams' graphic pics

GETTY IMAGES Sonny Bill Williams won the Rugby World Cup with the All Blacks in 2011 and 2015.

1. Return to the All Blacks for the Lions tour

His All Blacks career so far has come in fits and spurts. He's played the equivalent of three full seasons spread across five years, though has managed to win every international trophy that matters in that time, and take part in a Grand Slam. Beating the British and Irish Lions, who only tour once every 12 years, is the only feather missing from his cap, and if he were to play one more year of rugby in 2017, he'd get the chance to add it. He could also link up with old mate Tana Umaga at the Blues and have a crack at Super Rugby beforehand.

2. Retire

As incredible a physical specimen as he seems, Williams is getting on a bit. By the time the Olympics are done, he'll be 31, well into the downward slope of his career. If he manages to snatch a gold medal, he'll have a trophy cabinet that would be the envy of many an athlete, and a bank account and endorsements that would have him set up for life. So why not call it quits, and retire to the south of France? If he finds it too boring, he would surely be able to find a local rugby team keen for his services, and just as keen to pay handsomely for them.

3. Follow the Hayne plane to the NFL

If you thought the attention Jarryd Hayne received at the San Francisco 49ers was crazy, the circus that would form if Williams decided to take his talents to the land of the home and brave would be something else. Hayne has shown this season that it is possible to make the transition from league to American Football. Hayne did have the advantage of being three years younger, but then again Sonny Bill is clearly the superior athlete, and he's conquered every other code there is for someone his size and shape (apologies to the AFL).

4. Go back to the NRL ... again

The Sydney Roosters have sparked speculation that Williams may be headed back to the NRL, by parting ways with Michael Jennings and thus freeing up space in their salary cap. He has always enjoyed the NRL, but at the same time, he's already conquered it, with the Roosters in 2013 and the Bulldogs in 2004. He hasn't, however, won either of the top individual awards - the Dally M medal for the player of the season and the Clive Churchill medal for the player of the grand final, which might be incentive enough.

5. Coach

GETTY IMAGES Sonny Bill Williams won the NRL with the Sydney Roosters in 2013 and has been tipped to return to them in 2017.

The natural next step for many athletes, and one that Sonny Bill would appear to be well-suited to. Many of those who have played with him, be it in rugby, league, or sevens, have spoken highly of his dedication and work ethic, values that would surely rub off if he were to make the move into a management role, again, perhaps alongside old mate Umaga? He would be very young, but at the same time, he has already done it all.