Cutler goes off city (10)
I believe the answer is:
gloucester
'city' is the definition.
(I know that Gloucester is a city)
'cutler goes off' is the wordplay.
'off' is an anagram indicator.
'cutler'+'goes'='cutlergoes'
'cutlergoes' anagrammed gives 'GLOUCESTER'.
(Other definitions for gloucester that I've seen before include "Character in King Lear" , "part of 1 25 [KING LEAR]" , "City on the Severn" .)