Yu In-Soo

In-Soo's current-season form is up 64% on last season (Season 11→18), while his Rating climbed 19→21. His peak season for form remains 2020/21 (Season 40).

Domestic career

Season	Club	Apps	G	Match	RTG	Season
2026/27	Jeju United FC · 4th	25	0	6.14	21	15
2025/26	Jeju United FC · 3rd	35	1	6.77	19	11
2024/25	Gangwon FC · 2nd	28	2	6.7	31	13
2023/24	Gangwon FC · 4th	25	1	6.7	31	9
2022/23	Seongnam FC	6	1	6.98	—	—
2022/23	Gimcheon Sangmu FC · 3rd	19	2	6.98	37	17

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 6 earlier seasons and 1 youth-team spell in the full career.

Korea Republic · international

Side	Apps	G
Korea Republic U23	1	0

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

Scout report

Experienced headCentral defender

Yu In-Soo is a 31-year-old central defender at Jeju United FC, rated 20.9 overall by Field Insider's model, ranking 92nd of 123 on scout potential in the K League 1. A seasoned veteran, he has been a rotation option this season (37.4% of available minutes). His defensive output reads 2.76 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on In-Soo.

Judged on this season alone, In-Soo graded 18 — a solid campaign that ranks top 33% of the 28 centre-backs in the K League 1, on 4 clean sheets and 2.764 defensive actions per 90.

Year-on-year, that's a clear step up on last season (Season 11 → 18). Over the 6 seasons on record his form has drifted down, peaking in 2020/21.

On long-term talent our Rating reads 21, 18th of 28 of the 28 centre-backs in the K League 1. At 31 In-Soo is into the veteran stage, where the age curve weighs on the projection, and a market index of 3.4 reflects that trajectory.

From the career report

Read the full career report →

Below his 2020/21 peak but holding a solid level — the platform for a return is there.

Peak: 2020/21Holding level4 clubs

Current potential18th of 28 centre-backs · K League 1 Current seasonTop 33% centre-backs · K League 1 9th-best centre-back in the K League 1 92nd in the K League 1 · potential 18th-highest potential centre-back in the K League 1

20.9

Ratingi

18th of 28 centre-backs

18.3

Seasoni

below regular-starter level

37.4%

Minutes

rotation minutes

2.76

Def. actions / 90

moderate defensive volume

Output in context · Jeju United FC finished 4th of 12 · an upper-table side

Apps

2.76

Def. / 90

Tackles

Interceptions

Clean sheets

2.76 tackles, blocks & interceptions per 90 — moderate defensive volume, with 4 clean sheets across 25 appearances. Behind an upper-table side (4th of 12) 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 37.4% of available minutes — needs a settled run to prove the level.
Age curve. At 31, both level and resale value are on the downslope.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 20.9, In-Soo carries the 18th-highest potential of the centre-backs in the K League 1 of 28. Defensively he reads as moderate defensive volume (2.76 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.9× and falling).

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

Per 90 & availability

Minutes played %37.4%

Available fixtures29 of 29

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 902.764

Player flow

Goal involvements0

Shot conversion %0

Shot accuracy %100

Pass accuracy %78

Dribble success %40

Cards / 900.368

Foul involvement / 902.579

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 (~8), then tapers with age. At 31, In-Soo sits on 3.4, past its peak and easing. The blue line is In-Soo's projected Rating — 20.9 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 centre-backs in the K League 1 with 600+ minutes this season.

Shooting

Goals0

Shots on target2

Shots2

Passing

Assists0

Chances created12

Passes317

Pass accuracy78%

Possession

Successful dribbles2

Dribble success40%

Duels won53

Duels won %61.6%

Fouls won16

Defending

Tackles18

Interceptions9

Blocks3

Fouls committed12

Yellow/red cards

Yellow cards4

Red cards0

Transfer history

Jeju United FCJan 2025 – now

Gangwon FCuntil Jan 2025

SSeongnam FC(back from loan)Sept 2022 – Jan 2025

Gimcheon Sangmu FC(on loan)Mar 2021 – Sept 2022

SSeongnam FCJan 2020 – Mar 2021

FC Tokyo(back from loan)Jan 2019 – Jan 2020

Avispa Fukuoka(on loan)Feb 2018 – Jan 2019

FC Tokyountil Feb 2018

About Yu In-Soo

In-Soo Yu is a 31-year-old centre-back who plays for Jeju United FC, born on December 28, 1994, standing 178 cm tall. He is from Korea Republic. Jeju United FC currently sit 4th of 12 in the K League 1.

This season

In the current season, Yu In-Soo has made 25 appearances with 0 goals and 0 assists across 977 minutes, averaging a 5.93 match rating over his last 9 rated games, with 4 yellow cards. Though primarily a centre-back, he has also lined up in midfield this season.

When Yu In-Soo plays, Jeju United FC's record this season is 4W-6D-3L — and his match ratings average 5.9 at home against 6.5 on the road.

Recent matches

September 12, 2026: 2-2 draw away at Bucheon FC 1995 (90 minutes, 6.1 rating)
September 9, 2026: 1-0 win away at Gwangju FC (32 minutes, 7 rating)
September 5, 2026: 0-0 draw at home vs Ulsan Hyundai FC (19 minutes, 0 rating)
July 21, 2026: 1-1 draw at home vs Gangwon FC (90 minutes, 7.2 rating)
July 12, 2026: 0-0 draw at home vs Daejeon Citizen (90 minutes, 6.7 rating)
May 17, 2026: 1-2 loss at home vs FC Anyang (59 minutes, 6.5 rating)
May 9, 2026: 2-1 win at home vs FC Seoul (45 minutes, 6.7 rating)
April 25, 2026: 0-1 loss away at Incheon United (90 minutes, 6.9 rating)
April 18, 2026: 1-1 draw at home vs Gimcheon Sangmu FC (90 minutes, 6.3 rating)
April 11, 2026: 2-0 win away at Pohang Steelers (90 minutes)

Yu In-Soo's next match is on September 20, 2026, when Jeju United FC face Gangwon FC away in the K League 1.

Field Insider's view

Field Insider currently rates Yu In-Soo at 20.9 with a Season form score of 18.3, ranking 92nd of 123 centre-backs in the K League 1. See the full scout report for strengths, watch-points and the market-value outlook.

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

Career

Across 11 recorded seasons, Yu In-Soo has totalled 236 club appearances with 16 goals and 3 assists for 7 different clubs. His busiest campaign came in 2025/26, with 35 appearances for Jeju United FC.

Yu In-Soo's career has also included time at Gangwon FC, SSeongnam FC, Gimcheon Sangmu FC, FC Tokyo and Avispa Fukuoka.

On the international stage, Yu In-Soo has represented Korea Republic U23 — 1 cap in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Performance data · by competition

Career

Scout report

Output in context · Jeju United FC finished 4th of 12 · an upper-table side

Watch points