John Cornelius Sleeuwenhoek (26 February 1944 โ 20 July 1989) was an English professional footballer who played as a centre half. He made 269 appearances in the Football League, mainly for Aston Villa, and was capped twice for England U23. He was affectionately known as 'Tulip' due to his Dutch roots. He died in Birmingham in July 1989, aged 45.