Will lay on drink, you think (7)
I believe the answer is:
suppose
'think' is the definition.
(synonyms)
'will lay on drink' is the wordplay.
'will lay' becomes 'pose' (I can't explain this - if you can you should give a lot more credence to this answer).
'on' means one lot of letters go next to another.
'drink' becomes 'sup' (to sup is to drink).
'pose' put after 'sup' is 'SUPPOSE'.
'you' acts as a link.
Can you help me to learn more?
(Other definitions for suppose that I've seen before include "Reckon, think" , "Hypothesize" , "Guess" , "Put forward - imagine" , "'Believe, perhaps on uncertain grounds (7)'" .)