Domestic-league season · Aberdeen.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Premiership | 18 | 5 | 0 | 1291 | 6.85 |
 Eredivisieat Utrecht | 18 | 4 | 1 | 688 | 6.89 |
 UEFA Europa Conference League | 6 | 1 | 0 | 502 | 6.63 |
Following his move to Aberdeen, Karlsson's current-season form is up 225% on last season (Season 8→26), while his Rating eased 60→37. His peak season for form remains 2021/22 (Season 71).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Aberdeen · 8th | 18 | 5 | 0 | 6.85 | 37 | 26 |
| 2024/25 | Bologna · 9th | 24 | 2 | 0 | 6.49 | 60 | 8 |
| 2023/24 | Bologna · 5th | 7 | 0 | 0 | 6.87 | 63 | 0 |
| 2022/23 | AZ Alkmaar · 4th | 23 | 9 | 4 | 7.23 | 71 | 41 |
| 2021/22 | AZ Alkmaar · 5th | 38 | 17 | 12 | 7.37 | 80 | 71 |
| 2020/21 | AZ Alkmaar · 3rd | 32 | 11 | 9 | 7.25 | 79 | 59 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
J. Karlsson is a 27-year-old central midfielder at Aberdeen, rated 37.3 overall by Field Insider's model, ranking 121st of 219 in the Championship. In his prime years, he has been a rotation option this season (55.2% of available minutes). His defensive output reads 1.12 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Karlsson.
Judged on this season alone, Karlsson graded 26 — a strong campaign that ranks top 25% of the 20 central midfielders in the Championship, on 5 goals, 0 assists and 1.115 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 8 → 26). Over the 6 seasons on record his form has drifted down, peaking in 2021/22.
On long-term talent our Rating reads 37, 11th of 20 of the 20 central midfielders in the Championship. At 27 Karlsson is in his prime years, and a market index of 23.1 reflects that trajectory.
Past his 2021/22 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
1.12 tackles, blocks & interceptions per 90 — light defensive volume, with 4 clean sheets across 18 appearances. Going forward he chipped in 5 goals and 0 assists — a useful bonus from the back.
With a Rating of 37.3, Karlsson carries the 11th-highest potential of the central midfielders in the Championship of 20. Defensively he reads as light defensive volume (1.12 tackles, blocks & interceptions per 90). In the prime window — at or near peak market value, so the next two seasons are the ones to cash in or build around.
Generated from Field Insider's rating model · AI-written analysis to follow.
The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~23), then tapers with age. At 27, Karlsson sits on 23.1, at or near its peak. The blue line is Karlsson's projected Rating — 37.3 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.
No transfer news found for this player.
