Chambers enjoyed a brief fling with rugby league outfit Castleford but failed to impress enough to win a contract.
However, he is now going to coach some of England's top stars, including David Strettle and Nick Easter, to improve their speed work.
"I am a huge rugby fan and can't wait to start working with some of the best young rugby players in the country," Chambers told the Sun.
"I will be working with forwards as well as the backs.
"This is a great chance for me to keep my fitness levels up and work with some of the best athletes in England.
"I will be working with league players as well as those from union."



