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|Date of birth||15 December 1942|
|Place of birth||Manchester, England|
* Senior club appearances and goals counted for the domestic league only.
Raised in Cheltenham, Gloucestershire, he attended Naunton Park Secondary Modern School where he was influenced by sports teacher, Arnold Wills, with whom he was publicly reunited 50 years later when Summerbee was Guest of Honour at the 150th anniversary celebrations of Cheltenham YMCA, to which both had belonged in their youth. Summerbee made his league debut playing for Swindon Town in 1959 at the age of 16. He made more than 200 appearances for the Wiltshire club, scoring 38 goals. In 1965 Manchester City manager Joe Mercer signed Summerbee for a fee of £35,000. In his first Manchester City season Summerbee started every single match, the only Manchester City player to do so that season.
Playing on the right wing, Summerbee was one of the most influential players in the Manchester City side which won four trophies in three seasons from 1968–70. Something of a practical joker, Summerbee (or "Buzzer" as teammates nicknamed him) was also known for a fiery temperament, a trait described by teammate Francis Lee as "retaliating first". Summerbee left Manchester City in June 1975, moving to Burnley, for a £25,000 fee, after making more than 400 appearances for City.
Summerbee signed for Blackpool on Christmas Eve 1976. The transfer had been the Blackpool chairman's idea, not that of manager Allan Brown. Summerbee later admitted that he should not have joined the club. He made just three League appearances for the Seasiders.
Summerbee ended his footballing career at Stockport County, where he was player-manager in the 1978–79 season. In 1980 he returned to the game for a single match, playing for non-League Mossley in their single goal FA Cup defeat of Crewe Alexandra.
Off the pitch, Summerbee has been involved with a number a business ventures with varying degrees of success, including a period where he co-owned a menswear business with George Best. Summerbee is now the Club Ambassador for Manchester City.
He also featured in a BBC westcountry documentary 'Six days to Saturday' about Swindon Town in 1963 and a 'Nationwide' series 'Saturday Heroes' about Manchester City.
Summerbee's son, Nicky, was also a professional footballer, who followed in his father's footsteps by playing for both Swindon Town and Manchester City before joining Sunderland. His father, George, and uncle, Gordon, were both lower-division players whose careers were affected by the outbreak of war. Colin Shindler described the contrasting fortunes of the three generations in Fathers, Sons and Football.
As a player
- Football League Second Division champions: 1965–1966
- Football League First Division champions: 1967–1968
- FA Cup winners: 1969
- Football League Cup winners: 1970
- European Cup Winners' Cup winners: 1970
- FA Charity Shield winners: 1968, 1972
- James, Gary – Manchester – The Greatest City ISBN 1-899538-22-4