Mats Knoester, born on 19 November 1998 (age 27), is a Dutch central defender with Aberdeen. A left-sided centre-back by trade, he built his senior reputation in the Netherlands before moving into Scottish football.
His clearest early marker came at Heracles Almelo, where the 2020-21 season was his most productive in league terms: two goals in 27 appearances. That is modest enough, but for a defender still settling into senior football it was a useful stretch of regular work.
At Aberdeen, Knoester wears squad number five and has made six Conference League appearances in 2026-27. His current market value is around £510,000, according to Transfermarkt.
Knoester’s career to this point has been a straightforward one: Dutch development, a meaningful spell at Heracles, and now a place in Aberdeen’s defensive group.
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