Close agreement (7)
I believe the answer is:
compact
I believe this clue is a double definition.
'close' is the first definition.
(I've seen this before)
'agreement' is the second definition.
(compact can mean an agreement)
(Other definitions for compact that I've seen before include "union" , "cosmetics case" , "Dense; treaty" , "Small and neat - agreement" , "Neatly packed" .)