Now it changes, being pulled (2,3)
I believe the answer is:
in tow
'being pulled' is the definition.
(I've seen this in another clue)
'now it changes' is the wordplay.
'changes' indicates anagramming the letters.
'now'+'it'='nowit'
'nowit' anagrammed gives 'IN TOW'.
(Other definitions for in tow that I've seen before include "close behind" , "Along for the ride" , "Trailing behind" , "being pulled along" , "getting carried along" .)