Lech U19: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-08-01 | Hubert Janyszka | Lech U19 | Lech Poznan II | — |
| 2024-07-01 | Matvey Bokhno | Lech U19 | Lech Poznan II | — |
| 2024-04-19 | Wojciech Szymczak | Lech U19 | Lech Poznan II | — |
| 2023-12-05 | Sammy Dudek | Lech U19 | Lech Poznan II | — |
| 2023-10-01 | Kamil Jakóbczyk | Lech U19 | Lech Poznan II | — |
| 2023-07-01 | Wojciech Mońka | Lech U19 | Lech Poznan II | — |
| 2023-07-01 | Kamil Jakóbczyk | Lech Youth | Lech U19 | — |
| 2023-03-30 | Igor Brzyski | Lech U19 | Lech Poznan II | — |
| 2023-02-15 | Mateusz Pruchniewski | Lech U19 | Lech Poznan II | — |
| 2023-01-24 | Michał Gurgul | Lech U19 | Lech Poznan | — |
| 2022-05-03 | Igor Brzyski | Lech Youth | Lech U19 | — |
| 2022-02-01 | Michał Gurgul | Lech Youth | Lech U19 | — |
| 2022-01-01 | Wojciech Mońka | Lech Youth | Lech U19 | — |
| 2019-05-01 | Filip Szymczak | Lech U19 | Lech Poznan | — |
| 2019-02-04 | Krzysztof Bąkowski | Lech U19 | Lech Poznan | — |
| 2019-01-01 | Jakub Kamiński | Lech U19 | Lech Poznan | — |
| 2018-12-12 | Filip Marchwinski | Lech U19 | Lech Poznan | — |
| 2018-08-25 | Krzysztof Bąkowski | Lech Youth | Lech U19 | — |
| 2018-07-24 | Szymon Czyż | Lech U19 | Lazio U19 | Free |
| 2018-04-15 | Filip Szymczak | Lech Youth | Lech U19 | — |