Mathias Olesen

Following his move to Sonderjyske, Olesen's current-season form is down 53% on last season (Season 19→9), while his Rating eased 37→35. His peak season for form remains 2025/26 (Season 19).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	Sonderjyske · 12th	2	0	0	6.2	35	9
2025/26	Grazer AKLoan · 11th	15	1	1	6.75	37	19
2025/26	SpVgg Greuther Fürth · 16th	12	0	1	6.53	50	10
2024/25	SpVgg Greuther Fürth	29	0	0	6.63	—	—
2024/25	1. FC Köln · 13th	18	0	0	6.63	51	7
2023/24	1. FC Köln · 17th	6	0	0	6.33	60	1
2023/24	Yverdon SportLoan	17	0	1	6.59	—	—
2022/23	1. FC Köln · 11th	26	0	0	6.44	66	4

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 1 earlier season and 5 youth-team spells in the full career.

Luxembourg · international

Side	Apps	G
Luxembourg	48	3
Luxembourg U21	11	1
Luxembourg U19	6	1
Luxembourg U17	3	0

Career caps & goals — tournament breakdown in the full career.

Scout report

Squad depthCentral midfielder

M. Olesen is a 25-year-old central midfielder at Grazer AK, rated 36.6 overall by Field Insider's model. In his prime years, he has been a rotation option this season (43.2% of available minutes). His defensive output reads 3.47 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Olesen.

On the season, Olesen graded 19 for current form (age-blind), on 1 goal, 1 assist and 3.473 defensive actions per 90.

Year-on-year, that's a drop on last season (Season 19 → 9). Over the 6 seasons on record his form has trended upward, peaking in 2025/26.

On long-term talent our Rating reads 37. At 25 Olesen is in his prime years, and a market index of 7.1 reflects that trajectory.

From the career report

Read the full career report →

A career still climbing — Olesen is at his peak right now, and the curve hasn't flattened.

Peak: 2025/26Trending upRemarkably consistentStepped up 2025/26

36.6

Ratingi

developing / rotation level

19.1

Seasoni

below regular-starter level

43.2%

Minutes

rotation minutes

3.47

Def. actions / 90

moderate defensive volume

Output in context · Grazer AK finished 11th of 12 · a relegation-threatened side

Apps

3.47

Def. / 90

Tackles

Interceptions

Clean sheets

3.47 tackles, blocks & interceptions per 90 — moderate defensive volume, with 2 clean sheets across 15 appearances. Doing that for a relegation-threatened side (11th of 12) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight. Going forward he chipped in 1 goal and 1 assist — a useful bonus from the back.

Watch points

Game time. Only 43.2% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 36.6 overall — developing / rotation level. Defensively he reads as moderate defensive volume (3.47 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead.

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %43.2%

Available fixtures32 of 32

Goals / 900.072

Assists / 900.072

Goal contribution / 900.145

Defensive actions / 903.473

Player flow

Goal involvements2

Cards / 900.145

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around age 25 (~7), then tapers with age. At 25, Olesen sits on 7.1, at or near its peak. The blue line is Olesen's projected Rating — 36.6 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.

Season statistics

Bars = where he ranks among central midfielders in the Superliga with 600+ minutes this season.

Shooting

Goals1

Passing

Assists1

Defending

Tackles18

Interceptions26

Blocks4

Yellow/red cards

Yellow cards2

Red cards0

Transfer history

SonderjyskeJul 2026 – now

SpVgg Greuther Fürth(back from loan)Jun 2026 – Jul 2026

Grazer AK(on loan)Feb 2026 – Jun 2026

SpVgg Greuther FürthJul 2025 – Feb 2026Free Transfer

1. FC Köln(back from loan)Jul 2024 – Jul 2025

YYverdon Sport(on loan)Jan 2024 – Jul 2024

1. FC Kölnuntil Jan 2024

About M. Olesen

Mathias Flaga Olesen is a 25-year-old central midfielder who plays for Sonderjyske, born on March 21, 2001 in København, standing 187 cm tall. He is from Luxembourg. Sonderjyske currently sit 12th of 12 in the Superliga.

This season

In the current season, M. Olesen has made 2 appearances with 0 goals and 0 assists across 64 minutes, averaging a 6.2 match rating over his last 1 rated games.

Recent matches

August 3, 2026: 0-1 loss away at Odense (5 minutes)
July 26, 2026: 2-3 loss at home vs FC Midtjylland (59 minutes, 6.2 rating)

M. Olesen's next match is on August 31, 2026, when Sonderjyske face FC Copenhagen away in the Superliga.

Field Insider's view

Field Insider currently rates M. Olesen at 36.6 with a Season form score of 19.1. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 2 career titles — among them the 2. Bundesliga. Full list in the career record.

Career

Across 8 recorded seasons, M. Olesen has totalled 202 club appearances with 8 goals and 3 assists for 7 different clubs. His busiest campaign came in 2024/25, with 29 appearances for SpVgg Greuther Fürth.

M. Olesen's career has also included time at SpVgg Greuther Fürth, Grazer AK, 1. FC Köln and YYverdon Sport.

On the international stage, M. Olesen has represented Luxembourg, Luxembourg U21, Luxembourg U19, Luxembourg U17 — 68 caps and 5 goals in our records.

Transfer news

No transfer news found for this player.