Paid model brings good luck to drinker (6)
I believe the answer is:
prosit
'good luck to drinker' is the definition.
I can't judge whether this definition defines the answer.
'paid model' is the wordplay.
'paid' becomes 'pro' (I've seen this in other clues).
'model' becomes 'sit' (e.g. for a painting).
'pro'+'sit'='PROSIT'
'brings' acts as a link.
Can you help me to learn more?
(Other definitions for prosit that I've seen before include "Good health! Cheers!" , "I sport with a drinking toast in Germany" , "A German toast - good health" , "down the hatch" , "Bottoms up (in Germany)" .)