Following his move to Marseille, O'Riley's current-season form is down 21% on last season (Season 14→11), while his Rating eased 81→69. His peak season for form remains 2023/24 (Season 65).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	Brighton · 8th	6	1	0	6.65	70	4
2025/26	MarseilleLoan · 5th	15	1	2	6.75	69	11
2024/25	Brighton · 8th	21	2	2	6.89	81	14
2024/25	Celtic · 1st	2	0	1	8.2	42	2
2023/24	Celtic · 1st	37	18	11	7.89	59	65
2022/23	Celtic · 1st	38	3	12	7.29	54	36
2021/22	Celtic · 1st	16	4	2	7.36	51	16
2021/22	Milton Keynes Dons · 3rd	26	7	5	7.4	53	26

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 4 earlier seasons and 6 youth-team spells in the full career.

Denmark · international

Side	Apps	G
Denmark	6	0
Denmark U21	6	2

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

Scout report

Squad depthAttacking midfielder

M. O'Riley is a 25-year-old attacking midfielder at Marseille, rated 68.7 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (24.2% of available minutes). He brings 0.37 goal contributions per 90 (0.12 goals, 0.24 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on O'Riley.

On the season, O'Riley graded 11 for current form (age-blind), on 1 goal and 2 assists in 15 appearances (0.365 involvements per 90).

Year-on-year, that's broadly in line with last season (Season 14 → 11). Over the 6 seasons on record his form has drifted down, peaking in 2023/24.

On long-term talent our Rating reads 69. At 25 O'Riley is in his prime years, and a market index of 40.1 reflects that trajectory.

From the career report

Read the full career report →

Past his 2023/24 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2023/24Trending downBreakout: 2023/24StreakyStepped up 2022/234 clubs

68.7

Ratingi

a strong, regular top-tier starter

11.1

Seasoni

below regular-starter level

24.2%

Minutes

limited game time

0.37

Goal contrib / 90

productive for the role

Output in context · Marseille finished 5th of 18 · an upper-table side

Apps

Goals

Assists

G+A

0.07

Goals / app

1 goal in 15 appearances (0.07 per game) — light end product the role wants to see climb. Add 2 assists for 3 goal contributions in all.

Strengths

Final-third output. 0.37 goal contributions per 90 (0.12 goals, 0.24 assists) — productive for the role.

Watch points

Game time. Only 24.2% of available minutes — needs a settled run to prove the level.

Outlook

Rated 68.7 overall — a strong, regular top-tier starter. In the final third he profiles as a productive contributor (0.37 goal contributions 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 %24.2%

Available fixtures34 of 34

Goals / 900.122

Assists / 900.244

Goal contribution / 900.365

Defensive actions / 903.288

Player flow

Goal involvements3

Cards / 900.244

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 ages 23–27 (~82), then tapers with age. At 25, O'Riley sits on 40.1, at or near its peak. The blue line is O'Riley's projected Rating — 68.7 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 attacking midfielders in the Premier League with 600+ minutes this season.

Shooting

Goals1—

Passing

Assists2—

Defending

Tackles18—

Interceptions6—

Blocks3—

Yellow/red cards

Yellow cards2

Red cards0

Transfer history

€29.5M total transfer fees · 5 moves

Brighton(back from loan)Feb 2026 – now

Marseille(on loan)until Feb 2026

OOlympique Marseille(on loan)Sept 2025 – Feb 2026

BrightonAug 2024 – Sept 2025€ 29.5M

CelticJan 2022 – Aug 2024

Milton Keynes DonsJan 2021 – Jan 2022Free

Fulhamuntil Jan 2021

About M. O'Riley

Matthew Sean O'Riley is a 25-year-old attacking midfielder who plays for Brighton, born on November 21, 2000 in Hounslow, standing 187 cm tall. He is from Denmark. Brighton currently sit 1st of 20 in the Premier League.

This season

In the current season, M. O'Riley has made 6 appearances with 1 goal and 0 assists across 203 minutes.

M. O'Riley's next match is on August 27, 2026, when Brighton face Tromso at home in the UEFA Europa Conference League.

Field Insider's view

Field Insider currently rates M. O'Riley at 68.7 with a Season form score of 11.1. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 9 career titles — among them the Premiership and the Scottish Cup. Full list in the career record.

Career

Across 10 recorded seasons, M. O'Riley has totalled 209 club appearances with 41 goals and 37 assists for 7 different clubs. His busiest campaign came in 2022/23, with 38 appearances for Celtic.

M. O'Riley's career has also included time at Marseille, OOlympique Marseille, Celtic, Milton Keynes Dons and Fulham.

On the international stage, M. O'Riley has represented Denmark and Denmark U21 — 12 caps and 2 goals in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Also this season

Career

Scout report

Output in context · Marseille finished 5th of 18 · an upper-table side

Strengths

Watch points