Age today24
Recorded moves12
Peak recorded value€3.00m
Current market value€3.00m
01 / PLAYER DETAILS
At a glance
- Full name
- Karl Jakob Hein
- Born
- 13 Apr 2002
- Nationality
- Estonia
- Position
- Goalkeeper
- Preferred foot
- right
- Height
- 193
- Joined current club
- 01 Jul 2026
- Contract expires
- —
02 / THE JOURNEY
Previous clubs
- Arsenal FCLast recorded move · 01 Jul 2026
- Real Valladolid CFLast recorded move · 30 Jun 2025
- Arsenal FC U21Last recorded move · 01 Jul 2022
- Reading FCLast recorded move · 10 Mar 2022
- Arsenal FC U18Last recorded move · 01 Jul 2019
- FC Nomme UnitedLast recorded move · 01 Jul 2018
- FC Nomme United U17Last recorded move · 01 Jan 2018
- FC Nomme United YouthLast recorded move · 01 Jan 2017
Clubs from completed, dated transfers, most recent first. Repeat spells are listed in the full transfer history.
03 / VALUE OVER TIME
Market value history
| Valuation date | Age then | Club at the time | Market value |
|---|---|---|---|
| 27 May 2026 | 24 | SV Werder Bremen | €3.00m |
| 19 Dec 2025 | 23 | SV Werder Bremen | €3.00m |
| 09 Jun 2025 | 23 | Real Valladolid CF | €3.00m |
| 27 Dec 2024 | 22 | Real Valladolid CF | €3.00m |
| 11 Oct 2024 | 22 | Real Valladolid CF | €3.00m |
| 27 May 2024 | 22 | Arsenal FC | €2.00m |
| 19 Dec 2023 | 21 | Arsenal FC | €2.00m |
| 09 Oct 2023 | 21 | Arsenal FC | €1.50m |
| 03 Nov 2022 | 20 | Arsenal FC | €1.50m |
| 15 Jun 2022 | 20 | Arsenal FC U21 | €800k |
| 08 Apr 2020 | 17 | Arsenal FC U21 | €450k |
| 10 Dec 2019 | 17 | Arsenal FC U21 | €500k |
Each row is a dated valuation. The bar shows its share of the player’s peak recorded value. — means not recorded.
04 / EVERY MOVE
Full transfer history
| Date | From | To | Move | Fee |
|---|---|---|---|---|
| 01 Jul 2026 | Arsenal FC | SV Werder Bremen | Transfer | €3.00m |
| 30 Jun 2026 | SV Werder Bremen | Arsenal FC | Loan return | — End of loan |
| 22 Aug 2025 | Arsenal FC | SV Werder Bremen | Loan | — loan transfer |
| 30 Jun 2025 | Real Valladolid CF | Arsenal FC | Loan return | — End of loan |
| 13 Aug 2024 | Arsenal FC | Real Valladolid CF | Loan | — loan transfer |
| 01 Jul 2022 | Arsenal FC U21 | Arsenal FC | Internal move | — |
| 10 Mar 2022 | Reading FC | Arsenal FC U21 | Loan return | — End of loan |
| 24 Jan 2022 | Arsenal FC U21 | Reading FC | Loan | — loan transfer |
| 01 Jul 2019 | Arsenal FC U18 | Arsenal FC U21 | Internal move | — |
| 01 Jul 2018 | FC Nomme United | Arsenal FC U18 | Transfer | — ? |
| 01 Jan 2018 | FC Nomme United U17 | FC Nomme United | Internal move | — |
| 01 Jan 2017 | FC Nomme United Youth | FC Nomme United U17 | Internal move | — |
Includes loans, loan returns, internal moves and scheduled transfers. Free means a recorded €0 fee; — means no figure was recorded.