Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2017 |  | Kōsei Tani | GK |  | Gamba Osaka U18 | U18 |
| 07/2017 |  | Ui-jo Hwang | FW |  | Seongnam FC | Seongnam FC |
| 03/2017 | | Shuhei Akasaki | FW |  | Kashima Antlers | Kashima Antlers |
| 02/2017 | | Ryota Suzuki | GK |  | Yokohama F. Marinos | Marinos |
| 01/2017 | | Soo-yong Bae | DF | |||
| 01/2017 |  | Fabio | DF | | Yokohama F. Marinos | Marinos |
| 01/2017 | | Genta Miura | DF |  | Shimizu S-Pulse | S-Pulse |
| 01/2017 | | Haruya Ide | MF |  | JEF United Chiba | JEF United |
| 01/2017 | | Jin Izumisawa | MF |  | RB Omiya Ardija | RB Omiya Ardija |
| 01/2017 | | Takahiro Ko | MF | |||
| 01/2017 | | Ryotaro Meshino | MF | |||
| 01/2017 | | Yuto Mori | MF |  | Nagoya Grampus | Nagoya Grampus |
| 01/2017 | | Shogo Nakahara | MF |  | Hokkaido Consadole Sapporo | Consadole |
| 01/2017 | | Hiromu Kori | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2017 | | Daiki Niwa | DF |  | Sanfrecce Hiroshima | Sanfrecce |
| 07/2017 | | Ritsu Dōan | MF |  | FC Groningen | Groningen |
| 06/2017 | | Ken Tajiri | GK |  | Zweigen Kanazawa | Zweigen Kanazawa |
| 02/2017 | | Tatsuya Uchida | DF |  | Tokyo Verdy | Verdy |
| 02/2017 | | Shohei Ogura | MF |  | Ventforet Kofu | Ventforet |
| 02/2017 | | Shingo Akamine | FW |  | Fagiano Okayama | Fagiano Okayama |
| 01/2017 | | Keisuke Iwashita | DF |  | Avispa Fukuoka | Avispa |
| 01/2017 | | Takaharu Nishino | DF | | JEF United Chiba | JEF United |
| 01/2017 | | Hiroyuki Abe | MF |  | Kawasaki Frontale | Frontale |
| 01/2017 | | Kotaro Omori | MF |  | Vissel Kobe | Vissel Kobe |