Following his move to Gimcheon Sangmu FC, Yi-Seok's current-season form is down 75% on last season (Season 12→3), while his Rating eased 41→28. His peak season for form remains 2024/25 (Season 12).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	Gimcheon Sangmu FC · 3rd	9	1	0	6.9	28	3
2024/25	Gangwon FC · 2nd	18	2	1	6.7	41	12
2023/24	Gimpo Citizen · 3rd	2	0	0	—	49	0

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.

Scout report

Squad depthAttacking midfielder

Kim Yi-Seok is a 28-year-old attacking midfielder at Gimcheon Sangmu FC, rated 28.3 overall by Field Insider's model. An experienced operator, he has been a fringe squad member this season (7.3% of available minutes). He brings 0.36 goal contributions per 90 (0.36 goals, 0 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Yi-Seok.

On the season, Yi-Seok graded 3 for current form (age-blind), on 1 goal and 0 assists in 9 appearances (0.363 involvements per 90).

Year-on-year, that's a drop on last season (Season 12 → 3). Over the 3 seasons on record his form has trended upward, peaking in 2024/25.

On long-term talent our Rating reads 28. At 28 Yi-Seok is in his prime years, and a market index of 11.5 reflects that trajectory.

From the career report

Read the full career report →

Past his 2024/25 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2024/25Trending down

28.3

Ratingi

below regular-starter level

3.2

Seasoni

below regular-starter level

7.3%

Minutes

limited game time

0.36

Goal contrib / 90

productive for the role

Output in context · Gimcheon Sangmu FC finished 3rd of 6 · a mid-table side

Goals

Assists

G+A

0.11

Goals / app

1 goal in 9 appearances (0.11 per game) — light end product the role wants to see climb.

Strengths

Final-third output. 0.36 goal contributions per 90 (0.36 goals, 0 assists) — productive for the role.

Watch points

Game time. Only 7.3% 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 28.3 overall — below regular-starter level. In the final third he profiles as a productive contributor (0.36 goal contributions per 90). Experienced and reliable, but the value curve is easing (1.2× now → 0.9× projected in three years).

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

Per 90 & availability

Minutes played %7.3%

Available fixtures38 of 38

Goals / 900.363

Assists / 900

Goal contribution / 900.363

Defensive actions / 902.903

Player flow

Goal involvements1

Shot conversion %100

Shot accuracy %50

Cards / 900.363

Foul involvement / 902.903

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 (~19), then tapers with age. At 28, Yi-Seok sits on 11.5, past its peak and easing. The blue line is Yi-Seok's projected Rating — 28.3 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.