Rabble-rouser with odd gait returning roster (8)
I believe the answer is:
agitator
'rabble-rouser' is the definition.
(I've seen this before)
'odd gait returning roster' is the wordplay.
'odd' indicates anagramming the letters.
'returning' is a reversal indicator.
'roster' becomes 'rota' (rota is a kind of roster).
'rota' backwards is 'ator'.
'gait' anagrammed gives 'agit'.
'agit'+'ator'='AGITATOR'
'with' is the link.
(Other definitions for agitator that I've seen before include "Organiser" , "Political troublemaker" , "One stirring up (things)" , "Firebrand" , "activist" .)