Former Wallabies star Sterling Mortlock, says Samu Kerevi should be given the No.13 jersey for the Wallabies.

Mortlock believes that coach Micheal Cheika should opt for Kerevi over both Tevita Kuridrani and Israel Folau at outside centre against England.

“I've been really impressed with Samu's work ethic and ability to dent the (defensive) line,” Mortlock told AAP on Thursday.

“If you look at his stats, his ball carries are up there with the most in Super Rugby, he's also high on offloads and metres gained.

“He's everything you want in a 13 – a really physically dominant centre who gets a lot of touches on the ball – and he's been a standout in a team that's under-performing. That's even more difficult to do.

“I wish him well in his recovery and I really hope he gets a crack.”

Mortlock said he also believes Foalu should remain at fulback.

“I am absolutely categorically against playing world's best players in their positions out of position,” he said.

“I've seen it happen too many times where it backfires and I saw first-hand how it backfired for the All Blacks when they played Leon McDonald, who was an outstanding No.15 (fullback) at 13 (centre) when (Tana) Umaga was injured (in the 2003 World Cup semi-final).”