Manchester footballers not united? (4)
I believe the answer is:
city
'manchester' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Maybe you can see an association between them that I can't see?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for city that I've seen before include "eg New York" , "Town with cathedral" , "Manchester, e.g." , "Urban centre" , "Coventry, say" .)