|Date of birth||14 August 1951|
|Place of birth||Liverpool, England|
|Playing position||Central defender|
|* Senior club appearances and goals counted for the domestic league only|
Lacy, a student at the London School of Economics, played in the London Universities side which was then coached by the former England and Fulham player George Cohen. Cohen recommended him to his former club, which Lacy joined in June 1971. The central defender made 168 league appearances including 4 as sub and scoring on 7 occasions in his time at Craven Cottage which includes an appearance in the 1975 FA Cup Final. In July 1978 Lacy signed for Tottenham Hotspur for a £195,000 fee,the first time that an independent transfer tribunal had been used to set the fee for a player. He went on to feature in 132 matches, 9 as substitute, and to score 3 goals. He transferred to Crystal Palace in August 1983 where he went on to make a further 27 appearances. In November 1984 he moved to Norwegian football.
- 1975 FA Cup Final Runner up
After retiring from full-time football, Lacy spent 18 years working for Anglian Windows - a home improvement company. He is still involved in football with the Professional Footballers Association, as part of the White Hart Lane matchday hospitality team, and also turns out for the Spurs Legends team.
- Hugman,B,J, (Ed) The PFA Premier & Football League Players' Records 1946-2005 (2005) p357 ISBN 1-85291-665-6 Retrieved 13 October 2008
- Sporting heroes Retrieved 13 October 2008
- Purkiss, Mike; Sands, Nigel. Crystal Palace: A Complete Record 1905–1989. p. 332. ISBN 0907969542.
- Fulham FC memory lane-John Stacy Retrieved 6 May 2015
- Spurs legends team Retrieved 6 May 2015