Former wine to sell abroad? (6)
I believe the answer is:
export
'sell abroad?' is the definition.
('export' can be a synonym of 'sell abroad')
'former wine' is the wordplay.
'former' becomes 'ex' (prefix meaning former or onetime).
'wine' becomes 'port' (port wine is a kind of wine).
'ex'+'port'='EXPORT'
'to' acts as a link.
(Other definitions for export that I've seen before include "Send to another country" , "Send goods for sale abroad" , "Carry out of country" , "Sell goods abroad" , "Sell or transfer abroad" .)