Methodical teams City's deployed (10)
I believe the answer is:
systematic
'methodical' is the definition.
('systematic' can be similar in meaning to 'methodical')
'teams city's deployed' is the wordplay.
'deployed' indicates an anagram.
'teams'+'citys'='teamscitys'
'teamscitys' anagrammed gives 'SYSTEMATIC'.
(Other definitions for systematic that I've seen before include "organised" , "Methodical" , "Done methodically" , "intentional" , "Orderly" .)