Scotsman harry Souttar could make his Socceroos debut just three days after arriving in Australia for the first time.
Souttar qualifies to play for Australia through his mother and could make his international debut in a World Cup qualifier against Group B minnows Nepal on Thursday.
The 20-year-old has spent his whole life in Great Britain and is currently on loan to Fleetwood Town from English club Stoke.
Souttar played for Scotland under-19 before switching his allegiances earlier this year and made two appearances for the Olyroos.
The 198cm defender arrived in Australia on Monday and joined Socceroos teammates in Canberra ahead of their game at GIO Stadium.
"It's good to be here, obviously my first time in Australia. It was a long flight ... I'm really delighted to be here and focused on the game now," Souttar said.
"It would be very special (to debut) and an extremely proud moment for me if it does happen, and for my family, my mum especially.
"Everyone is really pleased for me. The players we've got in the Socceroos are world-class players and boys that play in the (English) Premier League week in, week out, so that's only going to benefit me.
"We've got to wait and see what the boss does but fingers crossed it will come sooner rather than later.
Australia host Nepal before flying to Kaohsiung to face Taiwan for their next group match on Tuesday.
This week marks Souttar's third Australian camp and is the only uncapped player in the squad.
He was an unused member of the squad for last month's qualifying opener in Kuwait as the Socceroos strolled to a 3-0 win in the Middle East.
"I'm extremely proud to be here," Souttar said.
"I think it's a culture where everyone loves coming to camp and everyone always has a smile on their face and enjoy their work first and foremost but we're here to do a job.
"It's a good opportunity now to get through the two games and hopefully get six points."
If Souttar debuts he will become the second tallest Socceroos player in history, only behind Zeljko Kalac at 202cm.
He will also follow in the footsteps of fellow Scot Martin Boyle, the Hibernian striker who made his Socceroos debut last year.
More than 750 Australian supporters welcomed the squad at a fan day in Canberra on Monday.
"There was a lot more fans there than I thought there would be, it was a great turnout," Souttar said.