Soccer war stirred up by one not moving in field (9)
I believe the answer is:
scarecrow
'one not moving in field' is the definition.
(a scarecrow stands in a field)
'soccer war stirred up' is the wordplay.
'stirred up' indicates anagramming the letters.
'soccer'+'war'='soccerwar'
'soccerwar' with letters rearranged gives 'SCARECROW'.
'by' acts as a link.
(Other definitions for scarecrow that I've seen before include "6 [FRIEND OF DOROTHY]" , "Stuffed shirt for frightening birds" , "Man of straw" , "Device for protecting crops" , "Farm field figure" .)