Wholesale brawling man sees (2,5)
I believe the answer is:
en masse
'wholesale' is the definition.
(both can mean as a group)
'brawling man sees' is the wordplay.
'brawling' is an anagram indicator.
'man'+'sees'='mansees'
'mansees' with letters rearranged gives 'EN MASSE'.
(Other definitions for en masse that I've seen before include "All together as a group" , "All together - in France (2.5)" , "Sees man (anag.)" , "as a bunch" , "Many as one" .)