Karl Hein: Goalkeeper, age 24, at Werder Bremen, valued around €2.9m. Full transfer history, fees, market value trend and where the career can go next.
| Date | From | To | Fee |
|---|---|---|---|
| 2026-07-01 | Arsenal | Werder Bremen | €3m |
| 2026-06-30 | Werder Bremen | Arsenal | Loan |
| 2025-08-22 | Arsenal | Werder Bremen | Loan |
| 2025-06-30 | Real Valladolid | Arsenal | Loan |
| 2024-08-13 | Arsenal | Real Valladolid | Loan |
| 2022-07-01 | Arsenal U21 | Arsenal | — |
| 2022-03-10 | Reading | Arsenal U23 | Loan |
| 2022-01-24 | Arsenal U23 | Reading | Loan |
| 2019-07-01 | Arsenal U18 | Arsenal U23 | — |
| 2018-07-01 | Nomme United | Arsenal U18 | — |
| 2018-07-01 | Nõmme United | Arsenal U18 | Free |
| 2018-01-01 | FC Nomme U17 | Nomme United | — |
| 2017-01-01 | Nomme Youth | FC Nomme U17 | — |
Werder Bremen · Arsenal · Real Valladolid · Arsenal U23 · Reading · Arsenal U18 · Nomme United · Arsenal U18 · Nõmme United · FC Nomme U17 · Nomme Youth