Media boss (6)
I believe the answer is:
editor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">media boss</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for editor that I've seen before include "cutter?" , "One responsible for leader" , "Paper head" , "Redo it and become head of publication" , "Top journalist" .)