Unproductive elites run in revolution (7)
I believe the answer is:
sterile
'unproductive' is the definition.
(unable to reproduce)
'elites run in revolution' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'in revolution' indicates an anagram.
'elites'+'r'='elitesr'
'elitesr' is an anagram of 'STERILE'.
(Other definitions for sterile that I've seen before include "like a mule" , "Lab so clean" , "Unable to have children" , "unable to reproduce results" , "Incapable of reproducing" .)