Who says? (5)
I believe the answer is:
simon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">who says?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for simon that I've seen before include "See 1" , "He's simple in rhyme" , "Apostle Peter's other name" , "Fellow" , "- Bol'var, S. American liberator" .)