Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2020 |  | Hyun-woo Joo | MF |  | Seongnam FC | Seongnam FC |
| 07/2020 | | Yong-hyeon Kwon | FW |  | Busan IPark | Busan IPark |
| 07/2020 | | Dong-su Kim | DF |  | VfB Lübeck | Lübeck |
| 06/2020 | | Mun-ki Hwang | MF | |||
| 06/2020 | | Yo-Han Park | DF | |||
| 02/2020 |  | Maxwell Acosty | FW |  | HNK Rijeka | HNK Rijeka |
| 02/2020 |  | Maurides | FW |  | Changchun Yatai | Changchun Yatai |
| 01/2020 | | Bon-Hyeok Koo | MF |  | Gimhae FC | Gimhae FC |
| 01/2020 | | Se-hee Ahn | DF |  | Gimcheon Sangmu | Gimcheon Sangmu |
| 01/2020 | | Ki-pyo Kwon | MF |  | Seoul E-Land FC | Seoul E-Land FC |
| 01/2020 | | Gyeong-min Kim | FW |  | Jeonnam Dragons | Jeonnam Dragons |
| 01/2020 | | Chae-hwa Park | FW | | Seongnam FC | Seongnam FC |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 05/2020 | | Jeong-bin Lee | MF | | Gimcheon Sangmu | Gimcheon Sangmu |
| 01/2020 |  | Manuel Palacios | FW |  | Pohang Steelers | Pohang Steelers |
| 01/2020 | | Gue-sung Cho | FW |  | Jeonbuk FC | Jeonbuk |
| 01/2020 | | Bon-Sang Ku | MF |  | Daejeon Hana Citizen | Daejeon |
| 01/2020 | | Kwang-hun Chae | DF |  | Gangwon FC | Gangwon FC |
| 01/2020 | | Sang-won Kim | DF | | Pohang Steelers | Pohang Steelers |
| 01/2020 | | Jae-hyeon Mo | MF |  | Suwon FC | Suwon FC |