Poet is on fire (5)
I believe the answer is:
burns
I believe this clue is a double definition.
'poet' is the first definition.
(Rabbie Burns 1759-1796 the Scottish poet)
'is on fire' is the second definition.
(I've seen this before)
(Other definitions for burns that I've seen before include "Rabbie - - (poet)" , "feels strong emotion" , "is full of passion" , "Scots poet" , "Cremates -- Scottish poet, d.1796" .)