I've been keeping track of off contract players in the 'straya section. There might be some +1 options on here that may have been triggered but not announced. So might not be 110% accurate but should be a good guide at what is on the local market for next season.
ADELAIDE UNITED
Eli Babalj
Marcelo Carrusca
Baba Diawara
Jordan Elsey
Eugene Galekovic (City rumoured)
John Hall
Kim Jae-sung
Ryan Kitto
Iacopo La Rocca
Jesse Makarounas
Marc Marino
Dylan McGowan {Europe rumoured)
George Mells
Nikola Mileusnic
Mark Ochieng
Benjamin Warland
BRISBANE ROAR
Arana
Thomas Broich
Joe Caletti
Joseph Katebian
Nathan Konstandopoulos
Jamie Maclaren
Avram Papadopoulos
Jacob Pepper (set to re-sign)
Mark Rodic
Michael Theo
CENTRAL COAST
Jake Adelson
Kwabena Appiah-Kubi
Jacques Faty
Fabio Ferreira
Scott Galloway
Paul Izzo (Adelaide rumoured)
Nick Montgomery
Ivan Necevski
Michael Neill
Roy O’Donovan (Jets rumoured)
Jacob Poscoliero
Mickael Tavares
MELBOURNE CITY
Christian Cavallo
Braedyn Crowley
Corey Gameiro
Steve Kuzmanovski
Joshua Rose
Thomas Sorensen
MELBOURNE VICTORY
Matt Acton
Nicholas Ansell
Alan Baro
Fahid Ben Khalfallah
Alastair Bray
George Howard
Rashid Mahazi
Lucas Spinella
James Troisi
NEWCASTLE JETS
Joel Allwright
Tomislav Arčaba
Kristian Brymora
Labinot Haliti
Andrew Hoole
Benjamin Kantarovski
Ben Kennedy (CCM rumoured)
Lei Lei Ma
Daniel Mullen
Morten Nordstrand
Prio Nielsen
Mateo Poljak
PERTH GLORY
Diego Castro
Joel Chianese
Dino Djulbic
Nicholas Feely
Richard Garcia
Lucian Goian
Nebojsa Marinkovic
Mitchell Oxborrow
Liam Reddy
Jamal Reiners
Joshua Risdon (WSW rumoured)
Jordan Thurtell
Marc Warren
Aryn Williams
Rhys Williams (Victory rumoured)
SYDNEY FC
Bai Antoniou
George Blackwood
Alex Brosque
Jordy Buijs
Aaron Calver
David Carney
Bobo
Milos Dimitrijevic
Filip Holosko
Charles Lokoli Ngoy
Milos Ninkovic
Matthew Simon
WELLINGTON PHOENIX
Roly Bonevacia (WSW rumoured)
Lewis Italiano
Vince Lia
Ryan Lowry
Glen Moss (South Africa rumoured)
Alex Rodriguez
Shane Smeltz
Jacob Tratt
Hamish Watson
WESTERN SYDNEY
Kearyn Baccus
Shannon Cole
Dimas Delgado
Ryan Griffiths
Brendan Hamill
Emilio Martinez
Scott Neville (Glory rumoured)
Mitch Nichols
Bruno Pinatares
Jerrad Tyson
Liam Youlley
Stefan Zinni
[Edit: Updated 7/4/17]