Australia risk losing Aston Villa defender Chris Herd to Scotland, according to the 22-year-old's agent.
Herd, who has broken into the Villa first team, is still to be capped by the Socceroos and has Scottish parents.
His agent, Phil Williams, said: "Like any Australian player, Chris wants to play for his country.
"But the reality is that if they don't call him up, somebody else will. Scotland are definitely interested. They have been watching him closely."
Herd has slotted in at right-back after the departure of Luke Young to QPR and was voted man-of-the-match in Villa's last game against Wolves.
However, he now faces competition from Scotland international Alan Hutton following his arrival from Tottenham on the final day of the transfer window.
"It would be great to see him represent Australia," added Williams. "That said, it honestly wouldn't surprise me if Scotland didn't try and call him up sooner rather than later."
Right-back is an area of strength for Scotland manager Craig Levein, who can call upon Hutton, Phil Bardsley, Steven Whittaker, Russell Martin and Mark Wilson.