Mention freer movement (5)
I believe the answer is:
refer
'mention' is the definition.
(I know that mention can be written as refer)
'freer movement' is the wordplay.
'movement' is an anagram indicator (letters move around).
'freer' anagrammed gives 'REFER'.
(Other definitions for refer that I've seen before include "Allude, assign" , "Bring up" , "Freer (anag.)" , "Make an allusion, or send on" , "Mention/allude (to)" .)