Postecoglou, who has seen his side record two wins and three draws in qualifying Group B so far, named seven uncapped players in the squad which must be trimmed down to 23 after this weekend’s fixtures.

Here are the seven who will be looking to claim their first senior Socceroos cap this month - if they are selected in the final 23.

Mustafa Amini

Born in Sydney, Amini started his career at Blacktown City in the National Premier League before signing for the Central Coast Mariners in 2010.

The central midfielder, now 23-years-old, was an instant hit in the A-League and after just one season Amini was snapped up by German giants Borussia Dortmund, who at the time were managed by Jurgen Klopp.

After being loaned back to the Mariners for a season, Amini spent three years in Dortmund’s second team, making 57 appearances and scoring three goals. However, Amini couldn’t break into the first team at the German club so opted to sign for Danish side Randers FC when his contract expired.

The young midfielder is currently applying his trade at Aarhus Gymnastikforening, also in the Danish Superliga, where he has scored five goals and supplied two assists in 24 games. Amini represented Australia’s Under 17s side in 2009 and has gone on to play for the Under 23s. He will now hope that a first senior cap is the next step in his career.

Ryan Edwards

Central midfielder Ryan Edwards made a bold move at just 17-years-old when he signed for English side Reading.

After two years in the youth set-up with the Royals, Edwards returned to Australia on season-long loan with Perth Glory, making 15 appearances in the A-League.

The Aussie midfielder feature just seven times before being released in 2015 when his contract expired. Edwards, who has captained Australia’s Under 20s side was given a second chance at Scottish side Partick Thistle, where he has become a first-team regular in the last year and a half.

Edwards has helped Thistle climb to an admirable sixth place in the SPL and the Aussie’s performances have now caught the eye of the national coach.

Rhyan Grant

Grant has missed just one game for table-topping Sydney FC this season and has been an integral part of Graham Arnold’s side.

The 26-year-old is predominantly a right back, but his versatility and ability to step into midfield is one of his major strengths. After signing for the Sky Blues in 2008, Grant cemented his place Sydney’s first team, although a serious knee injury in 2013 kept him on the sidelines for eight months.

He returned seamlessly the following year, marking his first game back with a stunning goal against Central Coast Mariners. Grant has remained injury free since then and his performers this campaign have warranted a Socceroos call-up.  

James Jeggo

After five years in the A-League with Melbourne Victory and Adelaide United, Jeggo joined Austrian outfit Sturm Graz in January 2016.

Jeggo’s career had appeared to stall after the midfielder won A-League Young Footballer of the Year in the 2014/15 season.

But this campaign Jeggo, still only 25, has become a prominent figure at the base of Graz’s midfield – earning his inclusion in the latest Socceroos squad.

Awer Mabil

The pacey winger is an exciting prospect at just 21-years-old, and there are bound to be several big clubs tracking the Australian-South Sudanese player over the next few months.

Mabil’s rise from living in a Kenyan refugee camp has been startling. His senior career started at Adelaide United as a promising teenager, where he made 47 appearances and scored eight goals.

Mabils’s performances earned him a move to Danish Superliga champions FC Midtjylland in 2015, however he made just nine senior appearances in the 15/16 season.

This campaign Mabil has rediscovered his form on loan at Superliga side Esbjerg. 

He has been involved in more goals that any other player for the Danish side, scoring three and supplying six assists.

Riley McGree

Perhaps the most surprise inclusion in Postecoglou’s 30-man squad was Adelaide United teenager Riley McGree.

The 18-year-old only broke into the first team at his club side this season and has since made 12 appearances in the centre of midfield.

Despite Adelaide’s sudden drop-off this campaign, McGree has produced some tenacious performances for The Reds. In round 18 he scored his first A-League goal in a 2-2 draw with Wellington Phoenix.

When asked about McGree, Postecoglou said: “I just think he’s a really exciting talent.

"I watched him from the first couple of games he played and he kind of makes you stand up and notice him straight away for a young guy.”

Danny Vukovic

Goalkeeper Danny Vukovic has been one of Sydney’s star men this season – but it looked like any hope of an international call up had been lost in the mists of time since his hand slap of a ref in the 2008 A-League grand final cost him a six month ban and his place at the Olympics. Since then he’s never even been considered for the Socceroos – despite being one of our most talented keepers. This season the 31-year-old has played every minute of every game for the Sky Blues and kept 12 clean sheets in 22 games. With more than 250 A-League appearances for Central Coast Mariners, Wellington Phoenix, Perth Glory and Melbourne Victory, Ange was big enough to ignore him no longer and give him his long overdue call up.