Legia Yth.: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2024-01-01 | Jan Leszczyński | Legia Yth. | Legia II | — |
| 2023-11-01 | Pascal Mozie | Legia Yth. | Legia U19 | — |
| 2022-11-01 | Kacper Potulski | Legia Yth. | Legia U19 | — |
| 2022-05-01 | Filip Rejczyk | Legia Yth. | Legia U19 | — |
| 2021-07-01 | Marcel Krajewski | Legia Yth. | Legia U19 | — |
| 2021-07-01 | Kacper Potulski | Lechia Youth | Legia Yth. | Free |
| 2020-07-01 | Wiktor Nowak | Legia Yth. | Znicz U19 | — |
| 2019-01-01 | Szymon Wlodarczyk | Legia Yth. | Legia U19 | — |
| 2019-01-01 | Kacper Tobiasz | Legia Yth. | Legia U19 | — |
| 2019-01-01 | Ariel Mosór | Legia Yth. | Legia U19 | — |
| 2018-07-01 | Nikodem Niski | Legia Yth. | Legia U19 | — |
| 2018-07-01 | Marcel Krajewski | Gdynia Youth | Legia Yth. | — |
| 2018-07-01 | Ariel Mosór | Unia W-wa U19 | Legia Yth. | Free |
| 2018-03-01 | Lukasz Lakomy | Legia Yth. | Legia U19 | — |
| 2018-01-01 | Jan Faberski | FFA Warszawa | Legia Yth. | Loan |
| 2017-07-01 | Maciej Kikolski | Legia Yth. | Legionovia U19 | Free |
| 2017-07-01 | Konrad Matuszewski | Legia Yth. | Legia U19 | — |
| 2017-07-01 | Cezary Miszta | Legia Yth. | Legia U19 | — |
| 2016-07-01 | Sebastian Walukiewicz | Legia Yth. | Legia II | — |
| 2016-07-01 | Michał Król | Lublin Youth | Legia Yth. | Free |