Expect drink with model (7)
I believe the answer is:
suppose
'expect' is the definition.
(supposing is a kind of expecting)
'drink with model' is the wordplay.
'drink' becomes 'sup' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'model' becomes 'pose' ('pose' can be a synonym of 'model').
'sup'+'pose'='SUPPOSE'
(Other definitions for suppose that I've seen before include "Judge" , "Expect" , "Put forward - imagine" , "Assume without proof" , "Hypothesize" .)