Sofa in box with lid free to be moved (12)
I believe the answer is:
chesterfield
'sofa' is the definition.
(chesterfield is a kind of sofa)
'box with lid free to be moved' is the wordplay.
'box' becomes 'chest' (chest is a kind of box).
'with' is a charade indicator (letters next to each other).
'to be moved' is an anagram indicator.
'lid'+'free'='lidfree'
'lidfree' anagrammed gives 'erfield'.
'chest'+'erfield'='CHESTERFIELD'
'in' is the link.
(Other definitions for chesterfield that I've seen before include "somewhere to sit" , "Type of sofa - place in Derbyshire" , "Midlands town" , "Sofa; English town" , "Sofa; overcoat" .)