Few names I like.
Jeremy Jacquet (Rennes, born 2006–07 – age 19)
• Only 11 Ligue 1 appearances in the 2024–25 season, plus loan minutes in Ligue 2 (17 games). That’s under 30 senior appearances in solid competition .
• But crucially: recorded the highest progressive action rate per match among all U‑21 defenders across Europe’s top-seven leagues—statistically ahead of big names like Dean Huijsen and Khusanov .
• Highly rated for tactical IQ, ball movement, aerial presence, composure under pressure. Trains at Rennes academy (same mould as Saliba), known for technical development.
Edit: I see Arsenal are interested in him since August 3rd…
Jon Martín (Real Sociedad, born April 2006 – age 19)
• Just 14 senior appearances for Real Sociedad B and 13 in La Liga / Europa League with the first team in the 2024–25 season .
• Named in UEFA Under‑19 Championship Team of the Tournament in 2025 and long‑listed in The Guardian’s Next Generation 2023 .
• La Liga club context means strong technical/positional training—even with limited minutes, his trajectory looks very steep.
Pietro Comuzzo – Fiorentina (Italy, 2005, age 20)
• League: Serie A
• Senior appearances: 33 in 2024‑25 season after only 4 in debut year
• Traits: 1.85 m, versatile, leadership background, mixes aerial strength with technical composure. Called to Italy senior squad in Nov 2024
• Upside: Late bloomer in Italy’s top flight, strong physical/positional maker.