The national team manager will likely stay with a similar formation for next month’s clashes with Saudi Arabia and Brazil on home soil, along with the Confederations Cup in Russia.
But what if Postecoglou had to pick a side with players solely based in the Hyundai A-League? Well we think he’d spoiled for choice!
We’ve put together a squad from the A-League which could do the job in Ange’s re-jigged system.
Goalkeeper: Danny Vukovic (Sydney FC): The standout stopper in the Hyundai A-League deservedly earned a Socceroos call-up for their last two World Cup qualifiers.
Right centre-back: Rhys Williams (Victory): The Melbourne-bound defender already has 14 international caps and was likened by club legend Archie Thompson this week to French maestro Mathieu Delpierre.
Centre-back: Alex Wilkinson (Sydney FC): An excellent season at the heart of the champions' defence showed his Caltex Socceroos days are far from over.
Left centre-back: Luke DeVere (Roar): Faced Germany in an international friendly in 2015 and would bring wholehearted energy and enthusiasm to the Australian back three.
Defensive midfielder: Josh Brillante (Sydney FC): Last played for Australia in 2014 but a mountainous force in midfield with an eye for spectacular goals.
Defensive midfielder: Brandon O'Neill (Sydney FC): Having represented his country at youth level, the time could be right for the tireless terrier to make the step up to the Caltex Socceroos.
Right attacking midfielder: Riley McGree (Adelaide United): The bolter in the last Australian squad, with Ange Postecoglou on record as saying he'd have no trouble throwing the teenager into action.
Left attacking midfielder: James Troisi (Victory): After a year out of the Caltex Socceroos set-up, his fabulous Hyundai A-League form saw him force his way back into international reckoning.
Right wing-back: Rhyan Grant (Sydney FC): His sizzling Sky Blues season earned him selection in the national squad for the first time and he'd let no-one down if given the chance to represent his country.
Left wing-back: Tommy Oar (Roar): Out of the international reckoning since late 2015, but was a standout in Roar's run to the Hyundai A-League semi-finals.
Striker: Jamie Maclaren (Roar): Featured twice for the Caltex Socceroos last year and his goalscoring form would make him an almost irresistible selection.
Tim Cahill (Melbourne City): A proven performer and with 48 goals for the Caltex Socceroos, one as recently as last year, you can't go past him.
Michael Zullo (Sydney FC): Last wore his country's colours over four years ago, but would add impact and thrust down the left.
Brandon Borrello (Roar): Still only 21, the former youth international striker has all the tools to make the step up.
Dylan McGowan (Adelaide United): Has made the move to Portugal in order to catch Ange's eye and maybe just needs a chance to show his suitability for international football.
Joe Caletti (Roar): Has captained his country at under-17 level and it seems only a matter of time before higher honours are achieved. But he will need to wait his turn with Jedinak, Milligan, Mooy and Irvine all crucial cogs in the Australian midfield.
This article was originally published at: http://www.a-league.com.au/article/hyundai-a-league-stars-in-line-for-caltex-socceroos/l8c4b1w9zl5919buqmoe74mw2.