The one in Greece is beyond hope (5)
I believe the answer is:
goner
'beyond hope' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'the one in greece' is the wordplay.
'in' is an insertion indicator.
'greece' becomes 'Gr' (abbreviation).
'one' put into 'gr' is 'GONER'.
'is' is the link.
Can you help me to learn more?
(Other definitions for goner that I've seen before include "he's bought it" , "One without hope" , "person about to depart" , "One doomed to die" , "A has-been in distress" .)