The son of former Danish international Erik Nielsen, Kent Nielsen started his career in Erik's former club Brønshøj Boldklub (in Copenhagen), alongside his brother Tommy. Kent Nielsen switched to the Danish team Brøndby IF in 1987, with whom he won the 1987 and 1988 Danish championships, as well as the 1989 Danish Cup.
Kent Nielsen, son of former Danish international Erik Nielsen, started his career at Brønshøj Boldklub (in Copenhagen), alongside his brother Tommy. In 1987, Kent Nielsen moved to Brøndby IF and won the Danish championships in 1987 and 1988, as well as the Danish Cup in 1989.