Knowing a sport will be broadcast (5)

I believe the answer is:

aware

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'knowing' is the definition.
(thesaurus)

I can't explain the rest of the clue.

(Other definitions for aware that I've seen before include "Attentive" , "Acquainted with or conscious of" , "Acquainted with or mindful of" , "Having knowledge or realisation" , "Conscious, sentient" .)

I've seen this clue in The Times.

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