Ekstraklasa
- 20O
- 20W
- 20S
90% or more have a feeSome have a feeNo fee recordedS summer, W winter, O other dates
2020-21 · Summer window
By club
- Legia Warsaw4 in6 out
- Cracovia Kraków6 in2 out
- Lech Poznań4 in4 out
- Wisła Płock3 in4 out
- Górnik Zabrze2 in4 out
- Lechia Gdańsk2 in4 out
- Raków Częstochowa3 in3 out
- Śląsk Wrocław4 in2 out
- Wisła Kraków3 in3 out
- Zagłębie Lubin3 in3 out
- Jagiellonia Białystok0 in4 out
- Warta Poznań3 in1 out
- Piast Gliwice0 in3 out
- Stal Mielec2 in1 out
- Pogoń Szczecin1 in1 out
- Podbeskidzie Bielsko-Biała1 in0 out
Sources: Wikipedia (CC BY-SA 4.0), API-Football · Data sources