Aston Villa captured the signature of Sil Swinkels in the summer of 2020. The defender had excelled at previous clubs Brabant FC and Vitesse Arnheim. 

He starred in the heart of defence as Aston Villa won the FA Youth Cup to cap his first season at the club, during which he also made his first-team debut against Liverpool in the third round of the FA Cup in January 2021. 

After returning from a knee ligament injury and impressing for Villa's Under-21s, Swinkels signed a new contract in the summer of 2024, penning another long-term deal in November that year having started the season strongly with the first team, making one appearance and featuring on the bench on several occasions. 

February 2025 saw the Dutchman join League One side Bristol Rovers on loan for the remainder of the season. He made 14 appearances and scored two goals for the Gas, including an instant impact on his debut where he netted a last-minute equaliser in a draw with Stockport County. 

He has earned international recognition at age-group level representing both Holland's Under-16 and Under-18 sides.