Beat Manchester United, say (4)
I believe the answer is:
club
I believe this is a double definition.
'beat' is the first definition.
(to hit with a club)
'manchester united say' is the second definition.
(I know that Manchester United F.C. is a club)
(Other definitions for club that I've seen before include "Union - strike" , "woman expects to be in" , "blackjack" , "Association - bludgeon" , "Place to meet one's friends with a weapon" .)