African city aid ban out of order (6)
I believe the answer is:
ibadan
'african city' is the definition.
(I've seen this before)
'aid ban out of order' is the wordplay.
'out of order' is an anagram indicator.
'aid'+'ban'='aidban'
'aidban' with letters rearranged gives 'IBADAN'.
(Other definitions for ibadan that I've seen before include "Capital of Oyo state, Nigeria" , "African city" , "Nigerian city; ban aid (anag.)" , "in West Africa" .)