Debate case for auditor meeting staff in corporation (8)
I believe the answer is:
argument
'debate' is the definition.
(synonyms)
'case for auditor meeting staff in corporation' is the wordplay.
'case for' suggests removing the centre (the letters which encase the others are used).
'meeting' says to put letters next to each other.
'staff' becomes 'men' (I've seen this in other clues).
'in' means one lot of letters goes inside another.
'corporation' becomes 'gut' (both can humorously mean belly fat).
'auditor' with its centre taken out is 'ar'.
'men' put within 'gut' is 'gument'.
'ar'+'gument'='ARGUMENT'
(Other definitions for argument that I've seen before include "Contentious debate" , "Heated disagreement" , "Barney" , "Discussion - line of proof" , "Tiff" .)