Unwitting accomplice (7)
(Other definitions for catspaw that I've seen before include "stooge" , "Tool" .)
'unwitting accomplice' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pawn that I've seen before include "Exploited person" , "Part with temporarily to raise money" , "To pop, hock" , "instrument" , "Hostage; chessman" .)