One can struggle without chicken in city (7)
I believe the answer is:
chennai
'city' is the definition.
(I have seen 'Indian city' mean 'chennai' so perhaps 'city' could also mean 'chennai')
'one can struggle without chicken' is the wordplay.
'one' becomes 'I' (Roman numeral).
'struggle' indicates an anagram (I've seen 'struggles' mean this).
'without' means one lot of letters goes inside another ('without' can be similar in meaning to 'outside').
'chicken' becomes 'hen' (hen is a kind of chicken).
'i'+'can'='ican'
'ican' is an anagram of 'cnai'.
'cnai' going around 'hen' is 'CHENNAI'.
'in' is the link.
(Other definitions for chennai that I've seen before include "Current name for Madras" , "City previously called Madras" , "Indian city, formerly called Madras" , "Indian port" , "Official name for Madras" .)