Brush back (7)
I believe the answer is:
sweeper
I believe this clue is a double definition.
'brush' is the first definition.
(I've seen this before)
'back' is the second definition.
(football term)
(Other definitions for sweeper that I've seen before include "One using broom" , "Back" , "cleaner" , "'Football defender, carries a brush (7)'" , "Defensive footballer" .)