Feel free to make oneself scarce (4)
I believe the answer is:
'make oneself scarce' is the definition.
(I've seen this in another clue)
'feel free' is the wordplay.
'free' indicates anagramming the letters.
'feel' is an anagram of 'FLEE'.
'to' acts as a link.
(Other definitions for flee that I've seen before include "Maybe escape" , "Cut and run" , "Run (from danger)" , "retreat" , "Leave" .)