Get leader in revolt sent down (9)
I believe the answer is:
relegated
'sent down' is the definition.
(I've seen this before)
'get leader in revolt' is the wordplay.
'in revolt' indicates anagramming the letters.
'get'+'leader'='getleader'
'getleader' is an anagram of 'RELEGATED'.
(Other definitions for relegated that I've seen before include "Put down" , "not given precedence" , "Demoted" , "Kicked downstairs" , "banished" .)