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.
The son of former Danish international Erik Nielsen, Kent Nielsen began his career in Erik's previous club Brønshøj Boldklub (in Copenhagen), alongside his brother Tommy. Kent Nielsen transferred to the Danish team Brøndby IF in 1987, where he won the 1987 and 1988 Danish championships, as well as the 1989 Danish Cup.