Hack perhaps reported with a sore throat (5)
I believe the answer is:
horse
'hack perhaps' is the definition.
(I know that hack is a type of mount)
'reported with a sore throat' is the wordplay.
'reported' shows a homophone (sound like).
'with a sore throat' becomes 'hoarse' (hoarse means having a sore throat).
'hoarse' sounds like 'HORSE'.
(Other definitions for horse that I've seen before include "punch, perhaps" , "Drier" , "bay, perhaps" , "gym apparatus" , "Equine animal" .)