Can New York make a man? (6)
I believe the answer is:
johnny
'a man?' is the definition.
(Johnny is an example)
'can new york' is the wordplay.
'can' becomes 'john' (slang for toilet).
'new york' becomes 'ny'.
'john'+'ny'='JOHNNY'
'make' acts as a link.
(Other definitions for johnny that I've seen before include "New arrival" , "- - Depp, actor" , "Man (informal); man's name" .)