Chance to play for the county? No thanks!
I believe the answer is:
turndown
'chance' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'play for the county? no thanks' is the wordplay.
'play' becomes 'turn' (turn is a kind of play).
'for' is a charade indicator (letters next to each other).
'the county? no thanks' becomes 'down' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'turn'+'down'='TURNDOWN'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for turndown that I've seen before include "Reduce volume of sound - or reject request" , "Refusal; decline" , "Dim - reject" , "Conviviality" , "Reject or refuse - or lower volume" .)