Business associate (7)
I believe the answer is:
partner
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">business associate</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for partner that I've seen before include "Business associate; one of a couple" , "Mate or business associate" , "sometimes joining in crime" , "south to north, perhaps" , "Other half?" .)