Saints coach Jim Mallinder, however, remains open-minded about letting his star summer signing play in the clash.
Mallinder also plans to rest North before the other autumn tests against South Africa, Argentina and Tonga.
"We don't just want him to play well for Saints, we want him to play well for Wales. We've told him we don't want to hinder his international play," said Mallinder.
"When it comes to the Australia game the club and George will be having that discussion. It will be our choice. But we will just decide what's best for him."