A mere menial but able to travel freely (6)
I believe the answer is:
varlet
'a mere menial' is the definition.
(varlet is a type of servant)
'travel freely' is the wordplay.
'freely' is an anagram indicator.
'travel' is an anagram of 'VARLET'.
'but able to' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
(Other definitions for varlet that I've seen before include "Travel (anag) - rascal (archaic)" , "Aged attendant" , "Travel around with old rogue" , "Travel with old rascal" .)