Wallabies back-rower Sean McMahon will join Australia's rugby sevens team for the first time since 2014.
McMahon will be included in the Aussies' squad for the second round of the Sevens World Series in Cape Town this week.
The 25-year-old, who has 27 Test caps to his credit, wants to put himself in contention for Tokyo 2020.
"Walshy and I have been talking about returning to sevens and I am really looking forward to representing my country again," McMahon said.
"The Australian Sevens team having been building well following their qualification for the Olympics next year and I'm looking forward to putting my hand up for the campaign."
McMahon, who plays for Japanese club Suntory, made his professional debut in the rugby sevens in 2012 before making the switch to Super Rugby with Melbourne Rebels in 2014.
He made his Wallabies debut in 2014 and played his last Test against Scotland in 2017.
Australia were beaten in the quarter-finals of the opening round Dubai Sevens last week with Walsh poised to name his squad for the South African leg of the championship later this week.
Australian Associated Press