Field Insider
Centre-backNetherlandsLa Liga

Juwensley Onstein

Squad depthBarcelona · 18 yrsNot playing
41.7
8.9%
Ratingi
8.9
535.7%
Seasoni
6.3
Valuei

based on the 2024/25 season · updated 20 Aug 2026

Profile

Full nameJuwensley Onstein
PositionCentre-back
NationalityNetherlands
Age18
Date of birth7 Oct 2007
Height184 cm
ClubBarcelona
More about J. Onstein →
Centre-back

Season stats

Full career & schedule →
0
Appearances
0
Goals
0
Assists
0
Minutes

Domestic-league season · Barcelona.

Scout report

Squad depthCentral defender

J. Onstein is a 18-year-old central defender at KRC Genk II, rated 41.7 overall by Field Insider's model. A teenage prospect, he has been a rotation option this season (48.8% of available minutes). His defensive output reads 2.97 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Onstein.

On the season, Onstein graded 9 for current form (age-blind), on 1 clean sheet and 2.969 defensive actions per 90.

Year-on-year, that's a clear step up on last season (Season 1 → 9).

On long-term talent our Rating reads 42. At 18 Onstein is still climbing toward his ceiling, and a market index of 6.3 reflects that trajectory.

From the career report
Read the full career report →

Onstein is operating at his career peak — the 2024/25 level is the level.

Peak: 2024/25Holding level
41.7
Ratingi
developing / rotation level
8.9
Seasoni
below regular-starter level
48.8%
Minutes
rotation minutes
2.97
Def. actions / 90
moderate defensive volume

Output in context · KRC Genk II finished 15th of 16 · a relegation-threatened side

19
Apps
2.97
Def. / 90
22
Tackles
8
Interceptions
1
Clean sheets

2.97 tackles, blocks & interceptions per 90 — moderate defensive volume, with 1 clean sheet across 19 appearances. Doing that for a relegation-threatened side (15th of 16) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight.

Watch points

  • Game time. Only 48.8% of available minutes — needs a settled run to prove the level.
  • Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 41.7 overall — developing / rotation level. Defensively he reads as moderate defensive volume (2.97 tackles, blocks & interceptions per 90). At 18 the trajectory points up — potential sits near its ceiling (100/100) and market value should climb as minutes and output follow.

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

Season statistics

Bars = where he ranks among centre-backs in the La Liga with 600+ minutes this season.

Shooting

Goals0

Passing

Assists0

Defending

Tackles22
Interceptions8
Blocks12

Yellow/red cards

Yellow cards1
Red cards0

Transfer news

No transfer news found for this player.