Mats Knoester, a formidable defender hailing from the Netherlands, graced the world on 19 November 1998, and as a 26-year-old he primarily plays as a central defender for Aberdeen. A towering figure in the field, he stands 6ft 1in tall (1.86m) with a weight of 12st 1lb (77kg). This athletic defender is easily recognised in his number 5 jersey.
Knoester's current market value is an estimated £513k, gathered from data by Transfermarkt. There's quite a bit of time left on his contract with Aberdeen, specifically 3 years and 10 months, set to flag out on 31 May 2029.
Starting his journey in professional football as a adolescent, Knoester first joined Feyenoord in the Eredivisie in the Netherlands as a trainee in July 2014. He made his mark, and in 2019, he transferred from Feyenoord to Heracles Almelo, another admirable club in the Eredivisie, for an undisclosed fee.
His tenure in Heracles Almelo saw a steady increase in league appearances, starting from three first team appearances in the 2018-2019 season, to 25 in 2019-2020. Scoring his first goals during the 2020-2021 season, he made 27 first team appearances. His final season in Holland saw him making 31 first team appearances.
Seeking greener pastures, Knoester moved to Ferencvaros in the Nemzeti Bajnokság I in Hungary in July 2022. Over two seasons, he made 29 appearances before briefly transferring to AGF Aarhus in the Danish Superliga on loan in September 2023. Whilst in Denmark, he made 14 first team appearances.
Fulfilling his loan, he returned to Ferencvaros in Hungary, but his time back saw reduced play with only two first team appearances.
Across another national border, Knoester transferred from Ferencvaros to Aberdeen in the Scottish Premiership in January 2025. Ending the 2024-2025 season with 13 first team appearances, the current 2025-2026 season saw him taking on the pitch only once so far.
Among the notable feats in his career, Knoester participated in the Scottish Cup 2024-2025 for Aberdeen, holding a strong presence on the field with four starts.