Career
He was the father of former West Ham United and Stoke City player Kevin Keen. Keen started his career at Queens Park Rangers, making his debut in 1959 against York City. He went on to play 393 league games and scored 39 goals for the club
He captained the FA tour of Australia in 1971.
He played for Luton Town from 1969 to 1972 until he was transferred to Watford. He was appointed player-manager of Watford in 1973.
He later moved into full-time management with Northampton Town, between 1978 and 1979, followed by his hometown club, Wycombe Wanderers, between January 1980 and 1984, leading them to the semi-final of the FA Trophy in 1981-1982, then to the Isthmian League title in 1982-1983. He went on to manage Marlow.
Keen ran two sports shops in High Wycombe.
In the 1970s he owned "Keen and Busbys" jointly with fellow professional football players from High Wycombe the brothers Viv and Martyn Busby. The shop was located in the Oxford Road, High Wycombe. In the 1980s his shop "Mike Keen Sports" opened.
Keen died after a short illness, aged 69, on 12 April 2009.