Age today28
Recorded moves5
Peak recorded value€22.00m
Current market value€18.00m
01 / PLAYER DETAILS
At a glance
- Full name
- Kristoffer Vassbakk Köpp Ajer
- Born
- 17 Apr 1998
- Nationality
- Norway
- Position
- Centre-Back
- Preferred foot
- right
- Height
- 198
- Joined current club
- 21 Jul 2021
- Contract expires
- 30 Jun 2030
02 / THE JOURNEY
Previous clubs
- Celtic FCLast recorded move · 21 Jul 2021
- Kilmarnock FCLast recorded move · 31 May 2017
- IK StartLast recorded move · 01 Jul 2016
- Lillestrøm SK YouthLast recorded move · 15 Jul 2014
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 |
|---|---|---|---|
| 22 Jul 2026 | 28 | Brentford FC | €22.00m |
| 03 Jun 2026 | 28 | Brentford FC | €18.00m |
| 09 Mar 2026 | 27 | Brentford FC | €18.00m |
| 09 Dec 2025 | 27 | Brentford FC | €16.00m |
| 17 Oct 2025 | 27 | Brentford FC | €16.00m |
| 30 May 2025 | 27 | Brentford FC | €18.00m |
| 16 Dec 2024 | 26 | Brentford FC | €18.00m |
| 27 May 2024 | 26 | Brentford FC | €15.00m |
| 14 Mar 2024 | 25 | Brentford FC | €15.00m |
| 19 Dec 2023 | 25 | Brentford FC | €18.00m |
| 20 Jun 2023 | 25 | Brentford FC | €16.00m |
| 03 Nov 2022 | 24 | Brentford FC | €16.00m |
| 15 Jun 2022 | 24 | Brentford FC | €18.00m |
| 23 Dec 2021 | 23 | Brentford FC | €17.00m |
| 05 Oct 2021 | 23 | Brentford FC | €17.00m |
| 28 Jun 2021 | 23 | Celtic FC | €7.00m |
| 18 Jan 2021 | 22 | Celtic FC | €4.00m |
| 21 Jul 2020 | 22 | Celtic FC | €4.00m |
| 08 Apr 2020 | 21 | Celtic FC | €2.70m |
| 05 Feb 2020 | 21 | Celtic FC | €3.00m |
| 20 Aug 2019 | 21 | Celtic FC | €3.00m |
| 03 Jan 2019 | 20 | Celtic FC | €2.00m |
| 08 Aug 2018 | 20 | Celtic FC | €1.25m |
| 04 Mar 2018 | 19 | Celtic FC | €800k |
| 14 Feb 2017 | 18 | Kilmarnock FC | €800k |
| 27 Dec 2015 | 17 | IK Start | €800k |
| 19 Aug 2015 | 17 | IK Start | €800k |
| 07 Dec 2014 | 16 | IK Start | €300k |
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 |
|---|---|---|---|---|
| 21 Jul 2021 | Celtic FC | Brentford FC | Transfer | €15.70m |
| 31 May 2017 | Kilmarnock FC | Celtic FC | Loan return | — End of loan |
| 20 Jan 2017 | Celtic FC | Kilmarnock FC | Loan | — loan transfer |
| 01 Jul 2016 | IK Start | Celtic FC | Transfer | €600k |
| 15 Jul 2014 | Lillestrøm SK Youth | IK Start | Transfer | — ? |
Includes loans, loan returns, internal moves and scheduled transfers. Free means a recorded €0 fee; — means no figure was recorded.