Last listener to invoke affection (6)
I believe the answer is:
endear
'invoke affection' is the definition.
'last listener' is the wordplay.
'last' becomes 'end'.
'listener' becomes 'ear' (I've seen this before).
'end'+'ear'='ENDEAR'
'to' acts as a link.
(Other definitions for endear that I've seen before include "Cause to like" , "Neared (anag.)" , "Make loveable" , "Give popularity to" , "Make appeal" .)