European most of the way flanked by keeper, presumably? (9)

'european' is the definition.

'most of the way flanked by keeper presumably?' is the wordplay.
'most of' means to remove the last letter.
'the way' becomes 'lane' (lane is a kind of way).
'flanked by' is an insertion indicator (other letters go on other side).
'keeper presumably?' becomes 'finder' (as in the 'finders, keepers' rhyme).
'lane' with its last letter taken away is 'lan'.
'lan' put into 'finder' is 'FINLANDER'.