A month of speculation about Lucas Neill's tenure as captain will end on Monday when new coach Ange Postecoglou names the Socceroos' captain.
Postecoglou will announce the captain on Monday afternoon amid speculation Neill will be replaced by Tim Cahill.
No player has led Australia more than Neill, who has captained the Socceroos 60 times, the same amount of games that Peter Wilson led the nation in the 1970s.
But with Neill under pressure to retain his spot in the starting line-up, Postecoglou is understood to be considering Cahill, who is certain to start in Tuesday night's friendly against Costa Rica.
Neill faced calls to quit after uncertain defensive displays in Australia's consecutive 6-0 away defeats to Brazil and France last month.
The 35-year-old has told of his desire to remain captain, while another potential candidate, Mark Bresciano, has also said he would be honoured to be awarded the role.
But Bresciano's future remains clouded by FIFA handing the midfielder a four-month ban and $1.9 million fine for an illegal transfer between clubs in the United Arab Emirates and Qatar.
Bresciano and Football Federation Australia have vowed to fight the FIFA verdict, but the uncertainty counts against his leadership ambitions.
Cahill, 33, also has said he would be honoured to be appointed captain while maintaining that speculation about the position hadn't impacted on morale at the Socceroos' training camp in Sydney.
"It has got nothing to do with me ... whatever the manager chooses to do, whoever leads their country is going to do a great job and we have got some great leaders in this team," Cahill said on Saturday.
"It's a privilege to have your name in the mix but overall, it's not for me to pick a captain."