Broadcast I’d watched (4)
I believe the answer is:
eyed
'watched' is the definition.
(I've seen this in another clue)
'broadcast i'd' is the wordplay.
'broadcast' indicates a 'sounds like' (homophone) clue (how the word might sound on the radio or TV).
'id' sounds like 'EYED'.
(Other definitions for eyed that I've seen before include "Watched, looked at" , "Closely observed" , "examined" , "Spotted" , "Vegetable" .)