Stupidly ignore old punter (9)
I believe the answer is:
gondolier
'punter' is the definition.
(I've seen this before)
'stupidly ignore old' is the wordplay.
'stupidly' indicates anagramming the letters (a stupid ordering of the letters).
'ignore'+'old'='ignoreold'
'ignoreold' with letters rearranged gives 'GONDOLIER'.
(Other definitions for gondolier that I've seen before include "Propeller of Venetian boat" , "Venetian boatman" , "Punter" , "Singular SO" , "Venetian waterman" .)