Press note what referee does (7)
I believe the answer is:
mediate
'referee does' is the definition.
'mediate' can be an answer for 'referee' (referee can mean to mediate or moderate). I am not certain of the 'does' bit.
'press note' is the wordplay.
'press' becomes 'media' (the press is part of the media).
'note' becomes 'te' (musical note).
'media'+'te'='MEDIATE'
'what' acts as a link.
Can you help me to learn more?
(Other definitions for mediate that I've seen before include "Help settle a dispute" , "try to resolve dispute" , "Help resolve a dispute" , "ie Tamed (anag.)" , "Umpire has to" .)