Want sailor to change scene (7)
I believe the answer is:
absence
'want' is the definition.
(I've seen this before)
'sailor to change scene' is the wordplay.
'sailor' becomes 'ab' (abbreviation for able seaman).
'to change' indicates an anagram.
'scene' anagrammed gives 'sence'.
'ab'+'sence'='ABSENCE'
(Other definitions for absence that I've seen before include "what can be heart-warming?" , "Seen cab (anag.)" , "It makes the heart grow fonder, they say" , "reason for better relationship?" , "It may make the heart grow fonder" .)