Lead wayward assistant to city (8)
I believe the answer is:
adelaide
'city' is the definition.
(Adelaide is an example)
'lead wayward assistant' is the wordplay.
'wayward' is an anagram indicator (wayward means out of control or chaotic).
'assistant' becomes 'aide' (aide is a kind of assistant).
'lead' is an anagram of 'adel'.
'adel'+'aide'='ADELAIDE'
'to' is the link.
(Other definitions for adelaide that I've seen before include "Woman" , "cook turkey on the barbie here?" , "Lead aide to Oz" , "where there was recently a test" , "Australian capital" .)