Youri Baas is a Dutch central defender, born on 17 March 2003 (age 23), who wears number 15 for Ajax. His current market value is around £10m, according to Transfermarkt.
By 2025–26 he had become a regular first-team presence rather than a fringe name being moved around the squad. It has also been his most productive league season, with 31 Eredivisie appearances and four goals from defence – useful enough, without needing to be dressed up as something it is not.
Across all competitions for Ajax in 2025–26, Baas has made 42 appearances and scored four goals. That includes eight Champions League matches, one KNVB Beker outing and two European play-off appearances, giving him a fairly full season’s work in a side where he remains involved week to week.
Baas is still in the early part of his senior career, but he is already established in Ajax’s first-team picture. His career to this point is straightforward: a Dutch defender at Ajax, playing regularly, adding the occasional goal, and building experience across domestic and European football.
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