Repeat cup tie at Real broadcast (12)
I believe the answer is:
recapitulate
'repeat' is the definition.
(synonyms)
'cup tie at real broadcast' is the wordplay.
'broadcast' indicates an anagram (letters scattered or cast around).
'cup'+'tie'+'at'+'real'='cuptieatreal'
'cuptieatreal' anagrammed gives 'RECAPITULATE'.
(Other definitions for recapitulate that I've seen before include "Go over in summary" , "Repeat in summary" , "Go over the main points again" , "Sum up" , "go over old ground" .)