Fancy model is after drink (7)
I believe the answer is:
suppose
'fancy' is the definition.
(I've seen this before)
'model is after drink' is the wordplay.
'model' becomes 'pose' ('pose' can be a synonym of 'model'**).
'is after' says to put letters next to each other.
'drink' becomes 'sup' (I've seen this before).
'pose' after 'sup' is 'SUPPOSE'.
(Other definitions for suppose that I've seen before include "Fancy" , "Guess" , "Assume, imagine" , "Hypothesize" , "Picture" .)