Send back a few pianos repaired for this character (7)
I believe the answer is:
persona
'character' is the definition.
(synonyms)
'send back a few pianos repaired for' is the wordplay.
'send back' says the letters should be written backwards.
'a few' indicates the answer is hidden within the clue.
'anosrep' can be found hidden inside 'pianos repaired for'.
'anosrep' back-to-front is 'PERSONA'.
'this' is the link.
(Other definitions for persona that I've seen before include "Role adopted by actor" , "One who is diplomatically acceptable" , "Theatrical role" , "Public image" , "External aspect of character" .)