He may reward a “zero blemish” performance (5)
I believe the answer is:
oscar
This clue could be a double definition.
'he' is the first definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'reward a zero blemish performance' is the second definition.
'Oscar' can be an answer for 'reward' (thesaurus). I'm unsure of the 'a zero blemish performance' bit.
'may' acts as a link.
Can you help me to learn more?
(Other definitions for oscar that I've seen before include "Film award; --- Hammerstein" , "One of several given to Chicago" , "-- Wilde, author" , "Mr Wilde - film award" , "One close to Mike" .)