Character has no spare change (7)
I believe the answer is:
persona
'character' is the definition.
(I know that character can be written as persona)
'no spare change' is the wordplay.
'change' indicates an anagram.
'no'+'spare'='nospare'
'nospare' anagrammed gives 'PERSONA'.
'has' is the link.
(Other definitions for persona that I've seen before include "Public image" , "External aspect of character" , "character on the stage?" , "Theatrical role" , "Assumed identity" .)