Refuse to entertain day in English city (5)
I believe the answer is:
leeds
'english city' is the definition.
(I've seen this before)
'refuse to entertain day' is the wordplay.
'refuse' becomes 'lees' (I can't explain this - if you can you should believe this answer much more).
'to entertain' is an insertion indicator.
'day' becomes 'd'.
'lees' going around 'd' is 'LEEDS'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for leeds that I've seen before include "British city and premier division football club" , "22 [FA CUP] runners-up" , "Industrial city of northern England" , "Championship team" , "City of northern England - castle of southern England" .)