Bernard Foley has learned a lot from Matt Giteau since his return to the Wallaby set-up under the new selection criteria.
Giteau became eligible to play for Australia again when they changed their policy with regards to picking overseas players, and was recalled for the Rugby Championship by Michael Cheika.
He started the opening game of the tournament against South Africa at inside centre before missing the win in Argentina through injury.
He is fit to return this week though and Foley, who played at fly-half against the Pumas, explained that Giteau has made a big impact in training.
"Those first two weeks we had him in Caloundra and Brisbane," Foley told the Canberra Times. "The way he prepares, he is just world class.
"His intensity and attention to detail in every training session was amazing and shows the class of player. As a young guy, you just absorb it. Hopefully a bit of that wears off on to me and my preparation.
"His experience is invaluable. Every time he comes on to the field he knows what he has to do. He knows where his game is at. He can perform that way.
"That's probably a big thing… understanding your own game, your own capabilities and playing to those strengths. His efficiency and how he gets around the park, and also the impact and the excitement he has for every session is something that really shocked me when he first came in to camp."