European pushes off to ancient city (7)
I believe the answer is:
ephesus
'ancient city' is the definition.
(ancient Greek city)
'european pushes off' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'off' indicates an anagram.
'pushes' anagrammed gives 'phesus'.
'e'+'phesus'='EPHESUS'
'to' acts as a link.
(Other definitions for ephesus that I've seen before include "Ancient Greek seaport now in Turkey" , "site of ancient temple" , "city in the past" , "Comedy of Errors setting" , "Ancient Greek city in Turkey" .)