Ulsan Hyundai
Zugänge
| ab | Name | Pos | Mannschaft | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 |  | Il-lok Yun | ST | |||
| 06/2021 | | Myung-jae Lee | AB |  | Gimcheon Sangmu | Gimcheon Sangmu |
| 06/2021 | | Yong-woo Park | MF | | Gimcheon Sangmu | Gimcheon Sangmu |
| 06/2021 | | Se-hun Oh | ST | | Gimcheon Sangmu | Gimcheon Sangmu |
| 04/2021 | | Jong-eun Lim | AB | |||
| 02/2021 | | Dong-jun Lee | MF |  | Busan IPark | Busan IPark |
| 01/2021 |  | Lukas Hinterseer | ST |  | Hamburger SV | Hamburg |
| 01/2021 | | Ho Lee | MF |  | Ayutthaya FC | Ayutthaya FC |
| 01/2021 | | Ji-hyeon Kim | ST |  | Gangwon FC | Gangwon FC |
| 01/2021 | | Dong-hee Lee | AB |  | Honam University | Honam University |
| 01/2021 | | Dong-hyeok Kang | MF |  | Ulsan University | Ulsan University |
| 01/2021 | | Hyung-min Shin | MF |  | Jeonbuk FC | Jeonbuk |
| 01/2021 | | Jun Choi | AB |  | Gyeongnam FC | Gyeongnam FC |
| 01/2021 | | Tae-hyeon Kim | AB |  | Seoul E-Land FC | Seoul E-Land FC |
| 01/2021 | | Young-sun Yun | AB |  | FC Seoul | FC Seoul |
| 01/2021 |  | Valeri Qazaishvili | MF |  | San Jose Earthquakes | Earthquakes |
| 01/2021 | | Yun-gu Kang | ST | |||
| 01/2021 | | Min-jun Kim | ST | | Ulsan University | Ulsan University |
| 01/2021 | | Hyeong-kyeong Lee | ST |  | Sungkyunkwan University | Sungkyunkwan University |
| 01/2021 | | Myung-bo Hong | TR | |||
| 01/2021 | | Sang-rok Kim | CO-TR |
Abgänge
| ab | Name | Pos | Mannschaft | Team | ||
|---|---|---|---|---|---|---|
| 08/2021 | | Lukas Hinterseer | ST |  | Hannover 96 | Hannover |
| 07/2021 | | In-sung Kim | ST | | Seoul E-Land FC | Seoul E-Land FC |
| 07/2021 |  | Jason Davidson | AB |  | Melbourne Victory | Melb. Victory |
| 06/2021 | | Hyeong-kyeong Lee | ST |  | Ulsan Citizen FC | Ulsan Citizen FC |
| 02/2021 |  | Júnior Negrão | ST |  | Changchun Yatai | Changchun Yatai |
| 02/2021 | | Sang-heon Lee | ST | | Busan IPark | Busan IPark |
| 02/2021 | | Jun Choi | AB | | Busan IPark | Busan IPark |
| 02/2021 | | Hoon-sung Jung | MF | | Busan IPark | Busan IPark |
| 02/2021 |  | Bjørn Johnsen | ST |  | CF Montréal | Montréal |
| 01/2021 | | Joo-ho Park | AB |  | Suwon FC | Suwon FC |
| 01/2021 | | Keun-ho Lee | ST |  | Daegu FC | Daegu FC |
| 01/2021 | | Jeong-in Park | ST | | Busan IPark | Busan IPark |
| 01/2021 | | Dong-hwan Min | TW | | Suwon FC | Suwon FC |
| 01/2021 | | Jin-ho Shin | MF |  | Pohang Steelers | Pohang Steelers |
| 01/2021 | | Min-deok Kim | AB |  | Daejeon Hana Citizen | Daejeon |
| 01/2021 | | Jae-won Jang | MF | | Ulsan Citizen FC | Ulsan Citizen FC |
| 01/2021 | | Gi-woon Lee | ST | | Ulsan Citizen FC | Ulsan Citizen FC |
| 01/2021 | | Dong-ho Jeong | AB | | Suwon FC | Suwon FC |
| 01/2021 | | Young-sun Yun | AB | | Suwon FC | Suwon FC |
| 01/2021 | | Ha-bin Park | MF |  | Bucheon FC 1995 | Bucheon FC 1995 |