The experienced leftback is stepping up to the role in the absence of the regular Socceroos from this experimental squad put together by Arnold for the friendly.

The 28 year old is the only survivor from the Russia 2018 starting line up in the current squad, put together from fringe Socceroos and debutants to give them an opportunity to shine ahead of the World Cup qualifying campaign getting underway later this year.

It's the first time Behich has worn the armband in his 35 caps for his country, but Arnold was confident he'll be an able leader in the absence of veterans such as Mark Milligan, Trent Sainsbury and Matt Ryan.

The fullback - who last month left PSV Eindhoven to join İstanbul Başakşehir – will become the 60th person to captain Australia's national football team.

“Aziz was a starting player at the Asian Cup and at the World Cup and he’s got the most senior experience and he’ll do a great job tomorrow night," said Arnold.

"He's just moved clubs back to Turkey and he's in a great space with his leadership qualities, his energy and mentally.

"I’m sure the boys will feed off that."

Arnold sees the game as a a testing ground for the fringe Roos to prove themselves up to the task of world class football – with his only concern that players may try to hard.

Arnold said this camp has been used to create extra depth for the Socceroos on the road to Qatar 2020.

"Coaching is about trusting and getting to know players, at this moment I feel we are in a great position because I’ve worked with over 60 players since taking on the job, I’ve got to know the characters well and that’s important," he said.

"You can see their tactical and technical qualities by video, but what you learn by working with them in camp is about the mentality, their strength of character and that’s important.

"I expect a quality performance from our boys, training sessions have been excellent, the boys are fit, fresh and mentally they are in great shape, they know they have an opportunity.

"There are young players here, and there are those who haven’t been with the Socceroos for a while and this is everyone’s chance to prove what they can do."

He added: "It's a case of them having a great opportunity to start their international career or to revitalise their international career."

"Normally when people get opportunities like this, obviously there's a lot of energy but I need to control their emotions and stick to the game plan.

"We've worked hard on the principles on how we expect to play the game. They're all in great shape, there's a great vibe around the place and a lot of excitement.

"It's a full house tomorrow night so we're looking forward to the game."