We don't have much really. Tom Rogic is at Celtic and scored a last minute winner for them in the FA Cup Final against Aberdeen. Aaron Mooy is on the books for Man City but spent the season on loan at Huddersfield. he was voted their player of the season in helping them to promotion. his future is uncertain, but several lower table Premier League clubs are interested. He is a play making central midfielder from a bit deeper.
We also have Jackson Irvine who has had a great season in midfield for Burton Albion - I think he might have been their top scorer with 10 or 11 from midfield and helping them stay up. Some of the bigger Championship clubs are interested in him. Mile Jedinak is at Villa now, and we have a central defender - Bailey Wright - at Bristol City. Massimo Luongo is at QPR and played most of the season. A couple of Premier League clubs are supposedly interested.
Tim Cahill is still in the squad but not playing much any more at age 37. Our best striker at the moment is Tomi Juric. He's at Luzern and has just had his first decent run without injuries for a while. He's a natural finisher who can head and shoot well, but lacks a bit of pace.
Trent Sainsbury just made his debut at CB for Inter, but he's on loan from a Chinese club who own a piece of Inter. He's probably not at that level but is a decent defender.
We have a few players in Germany - Matt Leckie got relegated with Ingolstadt but has been bought by Hertha Berlin who want to convert him to a wing back. He has pace but not great technical ability. We have a pacy young striker called Jamie McClaren who has just been signed by Darmstadt for next season.
Our reserve keeper Mitch Langerak is the first choice keeper at VfB Stuttgart. Our regular keeper is Mat Ryan who is on Valencia's books but has been on loan at Genk. We also have Brad Jones who was a reserve keeper at Liverpool but has just won the Eredivise with Feyenoord. He's 35 though and isn't being picked for the Socceroos.
We have quite a few players spread across Denmark, Holland, Austria, Turkey - leagues like that.
So we have plenty of players at a second tier level but no stand out stars. Ten years ago was our golden generation with Kewell, Cahill, Lucas Neill, Brett Emerton, Marco Bresciano, Vince Grella, John Aloisi, Viduka - all playing in the Premier League, Serie A or La Liga.
if you want to read further here's how all the overseas based Aussies went this season.
http://theworldgame.sbs.com.au/article/2017/06/07/how-overseas-aussies-performed-season