Ewen McKenzie insists he won't be telling the Waratahs where to play the Wallabies' superstar asset Israel Folau next Super Rugby season.

The Australian coach believes Folau is most effective as a fullback, but NSW may look to shift the country's key strike-weapon to outside centre in 2014.

Israel Folau was a revelation at fullback for the Wallabies in his debut season in rugby. Credit:AP

Waratahs boss Michael Cheika has three class players at his disposal in Kurtley Beale, Bernard Foley and Folau, who could all argue they're best suited to wearing the No.15.

Cheika has said he won't make a decision on positions until the pre-season, however it's understood he likes the idea of utilising Folau's power as the go-to man in the backline, like Sonny Bill Williams was for the Chiefs.