Sam Burgess is such a natural talent it won't take him long to adjust to union, according to England's most successful rugby league convert since Jason Robinson.

England winger Chris Ashton, who made the switch from Super League's Wigan to rugby in 2007, believes South Sydney NRL star Burgess has the ability to make an almost instant splash when he joins Bath in October.

Sam Burgess is hoping to represent England at the 2015 Rugby World Cup. Credit:Getty Images

Plenty have tipped Burgess to be a success in rugby but many doubt if he'll be up to speed in time for the 2015 World Cup in England in September-October.

"I'm sure he's getting the help he needs now, but he's such a natural rugby player he'll make things happen," said dual international Ashton.