Privileged citizen mean ref sent off (7)
'privileged citizen' is the definition.
(someone given the freedom of a city)
'mean ref sent off' is the wordplay.
'sent off' indicates anagramming the letters.
'meanref' is an anagram of 'FREEMAN'.
(Other definitions for freeman that I've seen before include "Person at liberty or with special rights", "Privileged citizen", "he's totally liberated", "Old DJ", "Morgan - - (films)".)