An edition of Keats? You bet! (5)
I believe the answer is:
stake
'bet' is the definition.
(synonyms)
'an edition of keats? you' is the wordplay.
'keats' can be anagrammed to 'STAKE'.
Though, I am not clear how this is indicated.
Can you help me to learn more?
(Other definitions for stake that I've seen before include "that's used in punt" , "A wager or pointed pole" , "Amount wagered" , "Investment" , "Keats (anag.)" .)