Great to move around LA on the loose (2,5)
I believe the answer is:
at large
'on the loose' is the definition.
(synonyms)
'great to move around la' is the wordplay.
'to move' indicates an anagram.
'around' means one lot of letters goes inside another.
'great' with letters rearranged gives 'atrge'.
'atrge' going around 'la' is 'AT-LARGE'.
(Other definitions for at large that I've seen before include "Escaped; as a whole" , "in a big way!" , "Escaped, not captured" , "At liberty, escaped" , "awaiting capture" .)