This was from 3 months ago and I'm sure many have been re-signed by their clubs or signed on elsewhere, but gives an indication of who could be available:
https://www.goal.com/en-au/lists/th...uld-leave-your-club/i78ukw362tvx1gdoyf954yjce
Every off-contract Adelaide United player: Lachlan Brook, Papa Baba Diawara, Scott Galloway, Kristin Konstandopoulos, Ken Ilso, Vince Lia, Michael Marrone, Nikola Mileusnic, Taylor Regan
Every off-contract Brisbane Roar player: Bryce Bafford, Jay Barnett, Eric Bautheac, Daniel Bowles, Shannon Brady, Joe Caletti, Henrique, Luke De Vere, Brett Holman, Thomas Kristensen, Alex Lopez, Matthew McKay, Tobias Mikkelsen, Stefan Nigro, Avram Papadopoulos, Jacob Pepper, Dylan Wenzel Halls, Brendan White
Every off-contract Central Coast Mariners player: Adam Berry, Kalifa Cisse, Jack Clisby, Corey Gameiro, Joe Gauci, Antony Golec, Tom Hiariej, Andrew Hoole, Peter Kekeris, Ben Kennedy, Joshua MacDonald, Matthew Millar, Jordan Murray, Connor Pain, Adam Pearce, Kye Rowles, Mario Shabow
Every off-contract Melbourne City player: Joshua Cavallo, James Delianov, Bruno Fornaroli, Eugene Galekovic, Curtis Good, Iacopo La Rocca, Osama Malik, Ramy Najjarine, Dylan Pierias, Bart Schenkeveld, Dario Vidosic
Every off-contract Melbourne Victory player: Rahmat Akbari, Kosta Barbarouses, Leigh Broxham, Keisuke Honda, Joshua Hope, Jai Ingham, Georg Niedermeier, Nicholas Sette, James Troisi, Carl Valeri
Every off-contract Newcastle Jets player: Jake Adelson, Mitchell Austin, Jair, Nicholas Cowburn, Daniel Georgievski, Lewis Italiano, Lachlan Jackson, Noah James, John Koutroumbis, Patrick Langlois, Glen Moss, Roy O’Donovan, Kaine Sheppard, Nikolai Topor-Stanley, Ronald Vargas
Every off-contract Perth Glory player: Jake Brimmer, Diego Castro, Joel Chianese, Jason Davidson, Dino Djulbic, Fabio Ferreira, Andrew Keogh, Liam Reddy, Brendon Santalab, Walter Scott, Matthew Spiranovic, Callum Timmins, Tando Velaphi
Every off-contract Sydney FC player: Joshua Brillante, Alex Brosque, Aaron Calver, Alex Cisak, Cameron Devlin, Rhyan Grant, Joel King, Charles Lokoli Ngoy, Brandon O’Neill, Jerry Skotadis, Ryan Teague, Marco Tilio, Jop Van Der Linden, Christopher Zuvela
Every off-contract Wellington Phoenix player: Max Burgess, Nathan Burns, Thomas Doyle, Andrew Durante, Callan Elliot, Louis Fenton, Dylan Fox, Roy Krishna, Filip Kurto, Ryan Lowry, Mitchell Nichols, Alex Rufer, Oliver Sail, Sarpreet Singh, Armando Sosa Pena, Steven Taylor, Reuben Way, David Williams
Every off-contract Western Sydney Wanderers player: Keanu Baccus, Alexander Baumjohann, Roly Bonevacia, Mark Bridge, Brendan Hamill, Raul Llorente, Rashid Mahazi, Manyiel Riel Majok, Oriol Riera, Joshua Risdon, John Roberts, Lachlan Scott, Jaushua Sotirio, Marc Tokich