Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 09/2012 |  | Jong-min Lee | DF |  | Gimcheon Sangmu | Gimcheon Sangmu |
| 08/2012 | | Hyo-jin Choi | DF | | Gimcheon Sangmu | Gimcheon Sangmu |
| 07/2012 | | Chi-woo Kim | DF | | Gimcheon Sangmu | Gimcheon Sangmu |
| 07/2012 |  | Sergio Escudero | FW |  | Urawa Red Diamonds | Red Diamonds |
| 07/2012 | | Jo-gook Jung | FW |  | AS Nancy Lorraine | AS Nancy |
| 01/2012 | | Seung-kyu Lee | GK | |||
| 01/2012 | | Min-woo Cho | DF | |||
| 01/2012 | | Hyun-Woo Jang | DF | |||
| 01/2012 | | Jin-kyu Kim | DF |  | Dalian Shide | Dalian Shide |
| 01/2012 | | Ju-young Kim | DF |  | Gyeongnam FC | Gyeongnam FC |
| 01/2012 | | Yong-Chan Kim | DF | |||
| 01/2012 | | Taek-Ki Lee | DF | |||
| 01/2012 | | Sang-Hee Yoo | DF | |||
| 01/2012 | | Si-Ho Yoon | DF |  | Daegu FC | Daegu FC |
| 01/2012 | | Ho-Yeon Cho | MF | |||
| 01/2012 | | Ik-Seong Joo | MF | |||
| 01/2012 | | Won-sik Kim | MF | |||
| 01/2012 | | Jung-Geun Kwak | MF | |||
| 01/2012 | | Jae-kwon Lee | MF |  | Incheon United | Incheon United |
| 01/2012 | | Hee-Do Park | MF |  | Busan IPark | Busan IPark |
| 01/2012 | | Sung-Woo Yoon | MF | |||
| 01/2012 | | Seung-yong Jung | FW | | Gyeongnam FC | Gyeongnam FC |
| 01/2012 | | Hyun-sung Kim | FW | | Daegu FC | Daegu FC |
| 01/2012 | | Jae-Il Lee | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2012 | | Jung-youl Lee | DF |  | Daejeon Hana Citizen | Daejeon |
| 08/2012 | | Hyun-sung Kim | FW |  | Shimizu S-Pulse | S-Pulse |
| 01/2012 | | Dong-jin Kim | DF |  | Zhejiang Professional | Zhejiang FC |
| 01/2012 | | Kyu-ro Lee | DF | | Incheon United | Incheon United |
| 01/2012 | | Byoung-Min Oh | DF | | Gyeongnam FC | Gyeongnam FC |
| 01/2012 | | Yong-ho Park | DF | | Busan IPark | Busan IPark |
| 01/2012 | | Hyo-Jin Yeo | DF | | Busan IPark | Busan IPark |
| 01/2012 | | Jong-hoan Choi | MF | | Incheon United | Incheon United |
| 01/2012 | | Seung-Hwan Bang | FW | | Busan IPark | Busan IPark |
| 01/2012 | | Jae-An Lee | FW | | Gyeongnam FC | Gyeongnam FC |
| 01/2012 | | Seung-yeoul Lee | FW |  | Gamba Osaka | Gamba |