Setter an obsessive fan of British university city (8)
I believe the answer is:
istanbul
'university city' is the definition.
'Istanbul' can be an answer for 'city' (Istanbul is an example). I am not sure about the 'university' bit.
'setter an obsessive fan of british' is the wordplay.
'setter' becomes 'I' (the person who set this crossword).
'an obsessive fan' becomes 'stan' (I've seen this in another clue).
'of british' becomes 'bul' (I can't justify this - if you can you should believe this answer much more).
'i'+'stan'+'bul'='ISTANBUL'
Can you help me to learn more?
(Other definitions for istanbul that I've seen before include "Stub nail in Turkey" , "City of Turkey" , "City in both Europe and Asia" , "Former capital of Turkey, once Constantinople" , "City straddling the Bosporus" .)