Celtic lost the battle but won the war against Anderlecht on Tuesday night.
Tom Rogic posted a mixed display for Celtic on Wednesday night.
Celtic recently took Australian duo Nick Faust and Leo Mazis on trial.
Tom Rogic starred as Australia beat Honduras in the World Cup play-off - but will he and Postecoglou be on either side of the Old Firm divide next season?
Celtic playmaker Tom Rogic represented Australia during the international break.
Australia manager Ange Postecoglou is understood to be interested in taking over at Rangers - but could he be their answer to Celtic's Brendan Rodgers?
Celtic fans are desperate to see Tom Rogic start against Bayern Munich on Tuesday night.
Alex McLeish has lauded Celtic's Tom Rogic as the Hoops beat Aberdeen 3-0.
Tom Rogic has been excellent for much of the season for Celtic, and impressed in their Scottish Premiership win over Aberdeen.
Celtic face Aberdeen in the Scottish Premiership, looking to put some daylight between the two teams at the top of the table.