Later today drunk takes refusal the wrong way (7)
I believe the answer is:
tonight
'later today' is the definition.
(I've seen this before)
'drunk takes refusal the wrong way' is the wordplay.
'drunk' becomes 'tight' (I've seen this in other clues**).
'takes' is an insertion indicator.
'refusal' becomes 'no'.
'the wrong way' shows that the letters should be reversed in order.
'no' in reverse letter order is 'on'.
'tight' placed around 'on' is 'TONIGHT'.
(Other definitions for tonight that I've seen before include "late in the day" , "after supper?" , "Got thin (anag)" , "Later today" , ""Not ____, Josephine!"" .)