Fancy a drink after I'm finally done? (7)
I believe the answer is:
imagine
'fancy' is the definition.
(I know that fancy is a more specific form of imagine)
'a drink after i'm finally done?' is the wordplay.
'drink' becomes 'gin' (gin is an alcoholic drink).
'after' is a charade indicator (letters next to each other).
'finally' indicates one should take the final letters.
The last letter of 'done' is 'e'.
'a'+'gin'='agin'
'agin' after 'im' is 'imagin'.
'imagin'+'e'='IMAGINE'
(Other definitions for imagine that I've seen before include "Believe to be so, suppose" , "Picture in one's mind" , "See something that doesn't exist" , "Picture to oneself" , "Fancy - dream" .)