EU caveat revised to be clear (8)
I believe the answer is:
evacuate
'be clear' is the definition.
(thesaurus)
'eu caveat revised' is the wordplay.
'revised' indicates anagramming the letters.
'eu'+'caveat'='eucaveat'
'eucaveat' with letters rearranged gives 'EVACUATE'.
'to' is the link.
(Other definitions for evacuate that I've seen before include "Make people leave a dangerous location" , "Clear inhabitants (from)" , "Move people from their homes" , "Get out of" , "Leave (a place of danger)" .)