K League 1
- 20O
- 20W
- 20S
90% or more have a feeSome have a feeNo fee recordedS summer, W winter, O other dates
2020-21 ยท Winter window
By club
- Ulsan HD7 in10 out
- Seongnam FC8 in4 out
- Suwon FC10 in2 out
- Gwangju FC5 in6 out
- Jeonbuk Hyundai Motors6 in5 out
- Gangwon FC5 in4 out
- Pohang Steelers5 in4 out
- Busan IPark3 in5 out
- Daegu4 in4 out
- FC Seoul3 in4 out
- Incheon United6 in1 out
- Jeju SK3 in3 out
- Suwon Samsung Bluewings0 in4 out
Sources: Wikipedia (CC BY-SA 4.0), API-Football ยท Data sources