Had nothing new, perhaps, for the grand finale (5)
I believe the answer is:
owned
'had' is the definition.
('own' can be a synonym of 'have')
'nothing new perhaps for the grand finale' is the wordplay.
'nothing' becomes 'O' (looks like zero - 0).
'perhaps' is an anagram indicator.
'for' says to put letters next to each other.
'finale' says to take the final letters.
The final letter of 'grand' is 'd'.
'new' with letters rearranged gives 'wne'.
'o'+'wne'+'d'='OWNED'
(Other definitions for owned that I've seen before include "Acknowledged" , "Endow (anag)" , "Possessed; admitted" , "Had lawful title to" , "fully paid off?" .)