Journeyman hooker Josh Mann-Rea is adamant he can rise to a new level to ease the Wallabies' injury crisis, declaring he is unfazed at the challenge of taking on the world's best players.

The 33-year-old former miner also says there is no end in sight for his career and has vowed to "work my butt off" to impress if he is given the chance to play for the Wallabies next week.

Josh Mann-Rea is relishing his call-up to the Wallabies. Credit:Jeffrey Chan

ACT Brumbies third-string rake Mann-Rea has been called into the Wallabies camp again after Tatafu Polota-Nau's ankle injury added him to a long list of unavailable hookers, which includes Test captain Stephen Moore.

Mann-Rea's fairytale rise from a rugby unknown to a potential Wallaby will continue for at least the next two weeks as he battles for his international debut against South Africa or Argentina.