See eye to eye with a European? Not quite (5)
I believe the answer is:
agree
'see eye to eye with' is the definition.
(seeing eye to eye is agreeing with someone)
'a european? not quite' is the wordplay.
'european?' becomes 'greek' (Greece is in Europe).
'not quite' means to remove the last letter (most but not all of the word).
'greek' with its final letter taken away is 'gree'.
'a'+'gree'='AGREE'
(Other definitions for agree that I've seen before include "confess?" , "Go along with" , "chime?" , "'Assent, concur (5)'" , "share the same view" .)