Greek character opposed to drink (7)
I believe the answer is:
chianti
'drink' is the definition.
(Chianti is an example)
'greek character opposed' is the wordplay.
'greek character' becomes 'chi' (letter from the Greek alphabet).
'opposed' becomes 'anti' (I've seen this before).
'chi'+'anti'='CHIANTI'
'to' is the link.
(Other definitions for chianti that I've seen before include "Italian wine - mountain range" , "Italian offering" , "Popular dry red wine of Tuscany" , "European wine" , "Italian wine variety" .)