England head coach Eddie Jones has suggested he could leave his role if England were to win the 2019 Rugby World Cup in Japan.
The Australian has won all nine games during his year-long reign as the English boss since replacing Stuart Lancaster at the end of the World Cup last year, having gone undefeated in the Six Nations and whitewashing the Wallabies 3-0 in Australia.
That record could be improved to 13 undefeated matches by the end of the year, with tests against South Africa, Fiji, Argentina and Australia to be played at Twickenham next month.
The 56-year-old said to BBC Radio Five Live's Sportsweek that he is still keen to seek fresh challenges in the game.
"I want to win the World Cup but once you've won the World Cup I think there's other projects you could be involved in to make the game better.