What a concert venue might have to give up (7)
I believe the answer is:
abandon
'to give up' is the definition.
('abandon' can be a synonym of 'give up')
'what a concert venue might' is the wordplay.
I cannot quite understand how this works, but
'a' could be 'an' and 'an' is found within the answer.
This may be the basis of clue (or it may be nonsense).
'have' acts as a link.
(Other definitions for abandon that I've seen before include "Leave, desert" , "dump" , "Desert; intemperance" , "Cast aside" , "Maroon" .)