The Wallabies took a 32-man squad to South Africa for their match against the Springboks but have reduced the tour party before they make the long trip to Argentina.

Logistically, it is cheaper for the Australian Rugby Union to send fewer players, given how difficult and expensive it is to fly from Johannesburg to Buenos Aires.

However, coach Michael Cheika wants to see the trio get minutes into their legs rather than come along for the ride when they will not be required in Australia's next outing in Mendoza.

"I want them to all go play a couple of games of NRC," Cheika said. "They all have NRC next week and NRC the week after, before we come back in for the Bledisloe camp."

Cheika said Perese, the 20-year-old Queensland Reds winger, has impressed him while in camp.

"He's killing it, that's why I don't want him to just stay here and train," Cheika said. "He is in a very competitive position and I think he is a guy who can defend in the midfield as well.

"He has that genuine pace, he has a great mindset and a great attitude. So he is coming along very nicely but I want him to play footy as well.

"I could have kept him but he wants to play footy as well and I think that's the best thing as well. Wherever we can, we want them to play footy."