Leave caveat to be resolved (6)
I believe the answer is:
vacate
'leave' is the definition.
(to vacate a place is to leave it)
'caveat to be resolved' is the wordplay.
'to be resolved' is an anagram indicator.
'caveat' with letters rearranged gives 'VACATE'.
(Other definitions for vacate that I've seen before include "Leave (a place previously occupied)" , "Withdraw as from premises" , "Quit" , "Leave (a position)" , "Move out and leave empty" .)