Following his move to Daejeon Citizen, Jin-Su's current-season form is down 71% on last season (Season 14→4), while his Rating eased 50→41. His peak season for form remains 2023/24 (Season 22).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	Daejeon Citizen	15	0	1	5.27	—	—
2025/26	Daejeon Citizen · 2nd	16	0	0	6.85	41	4
2025/26	Jeju United FC	8	0	0	6.2	—	—
2024/25	Jeju United FC · 3rd	38	3	0	6.55	50	14
2023/24	Jeju United FC · 3rd	34	5	1	6.73	52	22
2023/24	Daejeon Citizen	18	2	1	6.73	—	—
2022/23	Jeju United FC	8	4	0	7.03	—	—
2022/23	Gimcheon Sangmu FC · 3rd	17	1	0	7.03	45	4

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 3 earlier seasons in the full career.

Scout report

Squad depthCentral midfielder

Seo Jin-Su is a 25-year-old central midfielder at Daejeon Citizen, rated 40.6 overall by Field Insider's model, ranking 27th of 148 on scout potential in the K League 1. In his prime years, he has been a fringe squad member this season (18.8% of available minutes). His defensive output reads 2.1 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Jin-Su.

Judged on this season alone, Jin-Su graded 4 — a workmanlike campaign that ranks 48th of 48 of the 48 central midfielders in the K League 1, on 0 goals, 0 assists and 2.1 defensive actions per 90.

Year-on-year, that's a drop on last season (Season 14 → 4). Over the 4 seasons on record his form has held fairly steady, peaking in 2023/24.

On long-term talent our Rating reads 41, top 19% of the 48 central midfielders in the K League 1. At 25 Jin-Su is in his prime years, and a market index of 9.9 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: 2023/24

Current potential9th of 48 central midfielders · K League 1 · 24 apps Current season48th of 48 central midfielders · K League 1 · 24 apps48th-best central midfielder in the K League 127th in the K League 1 · potential9th-highest potential central midfielder in the K League 1

40.6

Ratingi

9th of 48 central midfielders

3.5

Seasoni

below regular-starter level

18.8%

Minutes

limited game time

2.1

Def. actions / 90

moderate defensive volume

Output in context · Daejeon Citizen finished 2nd of 6 · a title-challenging side

2.1

Def. / 90

Tackles

Interceptions

Clean sheets

2.1 tackles, blocks & interceptions per 90 — moderate defensive volume, with 2 clean sheets across 24 appearances. Behind a title-challenging side (2nd of 6) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume.

Watch points

Game time. Only 18.8% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 40.6, Jin-Su carries the 9th-highest potential of the central midfielders in the K League 1 of 48 — though on just 24 appearances this season, so the standing rests on a small sample. Defensively he reads as moderate defensive volume (2.1 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 %18.8%

Available fixtures38 of 38

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 902.1

Player flow

Goal involvements0

Shot conversion %0

Shot accuracy %26.7

Dribble success %52.6

Cards / 900.14

Foul involvement / 902.519

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 (~10), then tapers with age. At 25, Jin-Su sits on 9.9, at or near its peak. The blue line is Jin-Su's projected Rating — 40.6 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.