Media boss to gain a man (5)

I believe the answer is:

edwin

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'a man' is the definition.
(I've seen this before)

'media boss to gain' is the wordplay.
'media boss' becomes 'ed' (I can't explain this - if you can you should give a lot more credence to this answer).
'to gain' becomes 'win' (win is a kind of gain).
'ed'+'win'='EDWIN'

Can you help me to learn more?

(Other definitions for edwin that I've seen before include "Dickens novel 'The Mystery of . . . . . Drood'" , "-- Hubble (astronomer)" , "Fellow" , "boy" , "Sir - Landseer, artist" .)

I've seen this clue in the Sydney Morning Herald.

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