"The Second Coming" poet (5)
I believe the answer is:
yeats
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the second coming poet</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for yeats that I've seen before include "Irish poet, 1923 Nobel Prize winner" , "W B . . . . ., great Irish poet" , "William Butler .. . . ., Nobel-winning poet" , "William Butler ..., great Irish poet" , "Irish poet (The Winding Stair)" .)