Willing to search for provider of live sport (4,4)

I believe the answer is:

game fish

'provider of live sport' is the definition.
(game fish are fish caught for sport)

'willing to search' is the wordplay.
'willing' becomes 'game' (I've seen this before).
'to search' becomes 'fish' (fishing is a kind of searching).
'game'+'fish'='GAME FISH'

'for' acts as a link.

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