Divan up to now incomplete (4)
I believe the answer is:
sofa
'divan' is the definition.
(I've seen this before)
'up to now incomplete' is the wordplay.
'up to now' becomes 'sofar' (I've seen this in another clue).
'incomplete' means to remove the last letter.
'sofar' with its last letter taken away is 'SOFA'.
(Other definitions for sofa that I've seen before include "Couch" , "Long upholstered seat with back and arms" , "Wide padded seat" , "Upholstered seat for more than one person" , "Lounge" .)