Players prepared for an addition to season (7)
I believe the answer is:
parsley
'an addition to season' is the definition.
(ingredient which can season a meal)
'players prepared' is the wordplay.
'prepared' indicates anagramming the letters.
'players' anagrammed gives 'PARSLEY'.
'for' is the link.
(Other definitions for parsley that I've seen before include "Herb (flat-leafed or curly)" , "You might misuse this herb sparely" , "Herbal garnish" , "Green plant" , "Herb for garnishing" .)