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Transfer newsยทLilleยทUpdated 20 JulConfirmed

I. Cossier completes move to Lille

I. Cossierโ†’Lille
100%
Will it happen
100%
Credibility
Loan
Reported fee
4
Reports
PlayerFull profile โ†’
I. Cossier
Full Back ยท France ยท 19 yrs
62.9
Rating
33.7
Season
18.8
Value
This season
24
Apps
1
Goals
0
Assists
ClubLe Mansโ†’LeagueLigue 2โ†’
  • Lille have completed the signing of I. Cossier โ€” the move is confirmed, led by LOSC (official club website) and corroborated by 4 reports (100% credibility).
iInsights by Field Insider

What the reports say

2 of 4 cite concrete progress2 cite a named / official source
  • LOSC announce Isaac Cossier has signed a contract extension with the club until June 2030 and returns to Lille after his loan at Le Mans. โ€” LOSC (official club website)
  • Round-up article listing I. Cossier among Lille players returning from loan for the 2026โ€“27 season (notes him as returning from Le Mans). โ€” EuroFootNews
  • Transfer/roster listing showing I. Cossier recorded as returning from loan at Le Mans to Lille (entry dated 29 June 2026). โ€” LiveSoccerTV (team transfers page)
  • LOSC announced Isaac Cossier (19) has extended his contract with Lille until 2030. โ€” L'Equipe
Squad depthScout's view ยท Full-back
Full scout report โ†’
63
Rating
34
Season
18.8
Value index
1g 0a
in 24 apps ยท Ligue 2
Top 12% full-backs ยท Ligue 2Top 31% full-backs ยท Ligue 2

I. Cossier is a 19-year-old full-back at Le Mans, rated 62.9 overall by Field Insider's model, ranking 34th of 313 on scout potential in the Ligue 2 and 164th of 995 U-21 players tracked. A young player, he has been a rotation option this season (46.2% of available minutes). His defensive output reads 3.82 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Cossier.

The fitAt Lille (Ligue 1), his Rating of 63 would rank 21st of 38 in the current squad (squad average 59) โ€” reported as a loan deal.
The report at a glance
I. Cossier completes move to Lille โ€” Field Insider report card
4 Reports