Salesman to devour parrot (6)
I believe the answer is:
repeat
'parrot' is the definition.
(I've seen this before)
'salesman to devour' is the wordplay.
'salesman' becomes 'rep' (sales representative).
'to devour' becomes 'eat' (I've seen this before).
'rep'+'eat'='REPEAT'
(Other definitions for repeat that I've seen before include "Give another performance" , "Further airing" , "Say again, or belch (6" , "Iterate" , "Echo words" .)