Indian city's report on a developing role (9)
I believe the answer is:
bangalore
'indian city's' is the definition.
(I've seen this before)
'report on a developing role' is the wordplay.
'report' becomes 'bang' (I've seen this before**).
'on' is an insertion indicator (as in clothing \'on\' a person).
'developing' indicates an anagram.
'role' is an anagram of 'lore'.
'a' going inside 'lore' is 'alore'.
'bang'+'alore'='BANGALORE'
(Other definitions for bangalore that I've seen before include "Indian city" , "city in India" , "State capital" , "Asian city" .)