Revolutionary British football coach, one giving City its edge? (6)
I believe the answer is:
suburb
'one giving city its edge?' is the definition.
(suburbs are found at the edge of a city)
'revolutionary british football coach' is the wordplay.
'revolutionary' says the letters should be written backwards (letters revolve around).
'british' becomes 'b' (abbreviation e.g. in BBC).
'football' becomes 'RU' (rugby union - type of rugby football).
'coach' becomes 'bus' (synonyms).
'b'+'ru'+'bus'='brubus'
'brubus' in reverse letter order is 'SUBURB'.
(Other definitions for suburb that I've seen before include "Residential urban district" , "Residential district on the outskirts of a city" , "Residential city area" , "Outer town area" , "Present (bill); melt down (fat)" .)