City’s a large African city, not the capital (5)
I believe the answer is:
urban
'city's' is the definition.
(urban means relating to a city)
'a large african city not the capital' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is located in the answer.
'city' could be 'ur' (ancient Sumerian city state) and 'ur' is found in the answer.
A single letter 'b' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for urban that I've seen before include "Of or about city areas" , "Relating to a densely populated area" , "Citified" , "Town-dwelling" , "Municipal" .)