Relative in Greece I need to return (5)
I believe the answer is:
niece
'relative' is the definition.
(type of relative)
'in greece i need to return' is the wordplay.
'in' indicates a hidden word.
'to return' says the letters should be written in reverse.
'ecein' is hidden within 'greece i need'.
'ecein' written backwards gives 'NIECE'.
(Other definitions for niece that I've seen before include "Brother's girl" , "Family relation" , "member of different generation" , "Brother's daughter" , "Kinswoman" .)