Field Insider
41.2
15.4%
Ratingi
35
204.3%
Seasoni
8.8
Valuei

Profile

Full nameYoshio Koizumi
PositionAttacking midfielder
NationalityJapan
Age29
Date of birth5 Oct 1996
BirthplaceTokyo
Height172 cm
Shirt number#8
ClubKashiwa Reysol
Attacking midfielderalso played MID

Season stats

Full career & schedule →
35
Appearances
7
Goals
4
Assists
2912
Minutes

Domestic-league season · Kashiwa Reysol.

Performance data · by competition

CompetitionAppsGAMinMatch
J1 League357429127.34
J-League Cup10031—

Scout report

Project playerAttacking midfielder

Y. Koizumi is a 29-year-old attacking midfielder at Kashiwa Reysol, rated 41.2 overall by Field Insider's model, ranking 118th of 377 on scout potential in the J1 League. An experienced operator, he has been an ever-present this season (85.1% of available minutes). He brings 0.34 goal contributions per 90 (0.22 goals, 0.12 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Koizumi.

Judged on this season alone, Koizumi graded 35 — an excellent campaign that ranks top 8% of the 51 attacking midfielders in the J1 League, on 7 goals and 4 assists in 35 appearances (0.34 involvements per 90).

Year-on-year, that's a clear step up on last season (Season 12 → 35). Over the 5 seasons on record his form has drifted down, peaking in 2021/22.

On long-term talent our Rating reads 41, top 32% of the 51 attacking midfielders in the J1 League. At 29 Koizumi is in his prime years, and a market index of 8.8 reflects that trajectory.

From the career report
Read the full career report →

Below his 2021/22 peak but holding a solid level — the platform for a return is there.

Peak: 2021/22Trending upBreakout: 2025/26
Current potentialTop 32% attacking midfielders · J1 LeagueCurrent seasonTop 8% attacking midfielders · J1 League4th-best attacking midfielder in the J1 League118th in the J1 League · potential16th-highest potential attacking midfielder in the J1 League
41.2
Ratingi
16th of 51 attacking midfielders
35
Seasoni
developing / rotation level
85.1%
Minutes
near ever-present
0.34
Goal contrib / 90
modest end product

Output in context · Kashiwa Reysol finished 2nd of 20 · a title-challenging side

7
Goals
4
Assists
11
G+A
0.2
Goals / app

7 goals in 35 appearances (0.2 per game) for a title-challenging side. He also laid on 4 assists, so the all-round involvement reads 11 goal contributions (0.31 per appearance).

Strengths

  • Availability. On the pitch for 85.1% of available minutes — a dependable presence in the XI.

Watch points

  • Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 41.2, Koizumi carries the 16th-highest potential of the attacking midfielders in the J1 League (top 32%). In the final third he profiles as a work-in-progress on end product (0.34 goal contributions per 90). Experienced and reliable, but the value curve is easing (1.1× now → 0.8× projected in three years).

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

Transfer news

No transfer news found for this player.