Handed just 65 minutes of game time in 14 matches since leaving the A-League for Millwall, and currently serving a three-game suspension in the Championship, Cahill looms as a line-ball selection for van Marwijk.

To most, it would seem incomprehensible that the Dutchman could overlook Australia's long-time talisman and most prolific goalscorer for the global showpiece.

The 38-year-old could join the legendary Pele and Germans Uwe Seeler and Miroslav Klose as the only players ever to score in four consecutive FIFA World Cups if given a crack in Russia.

With his place in the Socceroos squad up in the air, Cahill, an avid social media user, posted two Tweets on Thursday night to his some 820,000 followers while reminiscing about his fondest FIFA World Cup memories.

"2006 WC in Germany. A moment I'll never forget. Always fearless and always looking for another defining moment," Cahill posted, with a video of his first goal in Australia's epic 3-1 victory over Japan 12 years ago.

2006 WC in Germany. A moment I’ll never forget. Always fearless and always looking for another defining moment. #TBT pic.twitter.com/K2lgDQ41as — TIM CAHILL (@Tim_Cahill) May 3, 2018

Perhaps hoping for another 'defining moment' in the two coming weeks, Cahill followed up by posting a replay of his match winner against the Azzurri: "Minutes later .......... after the first goal ..... this happened".

Minutes later .......... after the first goal ..... this happened #TBT pic.twitter.com/pxnMhppvvw — TIM CAHILL (@Tim_Cahill) May 3, 2018

Van Marwijk's extended Socceroos squad will assemble in Turkey for a four-week, pre-FIFA World Cup training camp, on May 19.

The Dutchman must trim his squad to 23 by June 4, with Australia launching their campaign against France on June 16 in Kazan.

Despite his iconic, record-setting Socceroos status, Cahill played for just 27 minutes under van Marwijk in Australia's two recent games against Norway and Colombia.