Fully satisfied with journalist being tranquillised (7)
I believe the answer is:
sedated
'being tranquillised' is the definition.
(I've seen this before)
'fully satisfied with journalist' is the wordplay.
'fully satisfied' becomes 'sated' (I've seen this before).
'with' is an insertion indicator.
'journalist' becomes 'ed' (short for editor).
'sated' enclosing 'ed' is 'SEDATED'.
(Other definitions for sedated that I've seen before include "Dead set (anag) - tranquillised" , "out for the count!" , "Calmed with drugs" , "Drugged" , "Under the influence of drugs" .)