Good opportunities get drinks (4)
I believe the answer is:
gins
'drinks' is the definition.
(gin is a kind of drink)
'good opportunities' is the wordplay.
'good' becomes 'g' (abbreviation).
'opportunities' becomes 'ins' (in can mean an opportunity or way into something).
'g'+'ins'='GINS'
'get' is the link.
(Other definitions for gins that I've seen before include "Drinks; traps" , "Alcoholic drinks" , "Sings badly for drinks" .)