Set to make his 90th appearance for the Wallabies, veteran hooker Tatafu Polota-Nau is retiring from Tests at year's end.
An injury to Shambeckler Vui and suspension for Tolu Latu has forced the Waratahs to bring in Tatafu Polota-Nau as short-term cover.
Australia may have won just one of their last six Tests, but Tatafu Polota-Nau has no doubt Michael Cheika should remain in charge.