English youth leader seen around large city (3)
I believe the answer is:
ely
'city' is the definition.
(Ely is a city in Cambridgeshire)
'english youth leader seen around large' is the wordplay.
'english' becomes 'e' (abbreviation).
'youth leader' becomes 'y' (I've seen this in other clues).
'seen around' means one lot of letters goes inside another.
'large' becomes 'L' (eg in clothes sizes).
'e'+'y'='ey'
'ey' enclosing 'l' is 'ELY'.
(Other definitions for ely that I've seen before include "Diocese in Eastern England" , "Cambs. city" , "English cathedral city" , "Cathedral city in Cambridgeshire" , "Fenland cathedral town" .)