Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 03/2018 |  | Jordan Smylie | FW |  | Central Coast Mariners Academy | Central C. (A) |
| 03/2018 |  | Wayne O’Sullivan | MA | | Central Coast Mariners Academy | Central C. (A) |
| 01/2018 | | Jacob Poscoliero | MF |  | Perth Glory | Perth Glory |
| 01/2018 | | Peter Skapetis | FW |  | Brisbane Roar | Brisbane Roar |
| 01/2018 | | Jacob Melling | MF |  | Western Sydney Wanderers | Western Sydney |
| 01/2018 | | Jack Kuipers | DF | | Central Coast Mariners Academy | Central C. (A) |
| 01/2018 | | Peter Kekeris | FW | | Central Coast Mariners Academy | Central C. (A) |
| 07/2017 |  | Wout Brama | MF |  | FC Utrecht | FC Utrecht |
| 07/2017 | | Tom Glover | GK |  | Tottenham Hotspur | Tottenham |
| 07/2017 | | Ben Kennedy | GK |  | Newcastle United Jets | Newcastle Jets |
| 07/2017 | | Antony Golec | DF | |||
| 07/2017 | | Josh Rose | DF |  | Melbourne City FC | Melbourne City |
| 07/2017 | | Kye Rowles | DF | | Brisbane Roar | Brisbane Roar |
| 07/2017 |  | Alan Baró | MF |  | Melbourne Victory | Melb. Victory |
| 07/2017 | | Daniel De Silva | MF | | Perth Glory | Perth Glory |
| 07/2017 | | Tom Hiariej | MF |  | FC Groningen | Groningen |
| 07/2017 | | Andrew Hoole | MF | | Newcastle United Jets | Newcastle Jets |
| 07/2017 | | Asdrúbal | FW |  | Port FC | Port FC |
| 07/2017 | | Ivan Jolic | AS-CO |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 05/2018 | | Josh Rose | DF |  | Edgeworth FC | Edgeworth FC |
| 01/2018 | | Kwabena Appiah-Kubi | FW |  | Incheon United | Incheon United |
| 01/2018 | | Asdrúbal | FW |  | AD Alcorcón | Alcorcón |
| 08/2017 | | Steve Whyte | MF |  | Tacoma Defiance | Tacoma Def. |
| 07/2017 | | Paul Izzo | GK |  | Adelaide United | Adelaide United |
| 07/2017 | | Jake Adelson | DF | | Newcastle United Jets | Newcastle Jets |
| 07/2017 | | Scott Galloway | DF |  | Wellington Phoenix | Wellington Ph. |
| 07/2017 | | Reece Papadimitrios | MF |  | Newcastle Olympic | NewcastleOlympi |
| 07/2017 | | Ryan Peterson | MF |  | Virginia Cavaliers | Univ. Virginia |
| 07/2017 | | Jacob Poscoliero | MF | | Perth Glory | Perth Glory |
| 07/2017 | | Roy O’Donovan | FW | | Newcastle United Jets | Newcastle Jets |