Person assigned ne’er does badly (8)
I believe the answer is:
endorsee
'person assigned' is the definition.
I can't tell whether this definition defines the answer.
'ne'er does badly' is the wordplay.
'badly' indicates an anagram (letters in the wrong order).
'neer'+'does'='neerdoes'
'neerdoes' anagrammed gives 'ENDORSEE'.
Can you help me to learn more?
(Other definitions for endorsee that I've seen before include "One to whom cheque is assigned" , "he eventually gets cheque" , "one given money?" .)