Player Summary
J. Konstantyn's club history lists 3 spells across 3 clubs.
Season goals1
Season assists0
Rating-
Transfer history
| Date | From | To | Terms |
|---|---|---|---|
| 2025-07-18 |  Korona Kielce |  Pogoń Grod. Mazowiecki | Transfer |
| 2025-06-29 | Korona Kielce | Pogoń Grod. Mazowiecki | Free agent |
Club history
| Period | Team | Competition | Country |
|---|---|---|---|
| 2025-2027 | Pogoń Grod. MazowieckiCurrent |  I Liga |  Poland |
| 2022-2026 | Korona Kielce |  Ekstraklasa | Poland |
| 2019-2020 |  Korona Kielce U19 |  UEFA Youth League | World |