The former Chiefs, Waikato and Maori All Blacks player has amassed more than 100 caps for French side La Rochelle since leaving New Zealand. His former Chiefs coach Dave Rennie is now in charge of the Wallabies.
"Unlike New Zealand, Australia has a rule allowing players who are overseas to still be eligible for selection. I am available to play for the Wallabies," Kerr-Barlow told French publication Rugbyrama.
"I was born there. I have a lot of ties in this country and if the staff calls me I will go without hesitation. It would be a great opportunity but for the moment I am focused on La Rochelle."