Ways out exist perhaps (5)
I believe the answer is:
exits
'ways out' is the definition.
(I've seen this before)
'exist perhaps' is the wordplay.
'perhaps' indicates an anagram.
'exist' anagrammed gives 'EXITS'.
(Other definitions for exits that I've seen before include "Egresses" , "Departs" , "Ways out" , "Goes out, leaves" , "Withdraws" .)