Gannet possibly going to pot, braised (7)
I believe the answer is:
seabird
'gannet possibly' is the definition.
(gannet is a kind of seabird)
'going to pot braised' is the wordplay.
'going to pot' indicates anagramming the letters.
'braised' is an anagram of 'SEABIRD'.
(Other definitions for seabird that I've seen before include "Marine creature" , "Gannet possibly" , "gannet, perhaps" , "gull, say" , "Gull, for example" .)