Career
Dillon joined Tottenham Hotspur as an apprentice in December 1969. A central defender he played 29 times in all competitions including three as a substitute and scored one goal between 1972–1974. In December 1974 he joined Millwall in a loan deal and went on to make four appearances for the club before joining Swindon on loan in March 1975 where he featured in nine matches including two as subordinate
Dillon had three spells in the North American Soccer League (NASL).
In 1972 with Montreal Olympique, between 1975-1977 he played for New York Cosmos (1970-1985) alongside Pelé and Giorgio Chinaglia before ending his career at Washington Diplomats in 1978-1979. He was the head coach of Georgetown Hoyas soccer.
Today, Dillon owns a post office in the village of Moulton close to the Cambridgeshire–Suffolk border.