Poet, perhaps, is a non-expert (6)
I believe the answer is:
layman
'non-expert' is the definition.
(I've seen this before)
'poet perhaps is a' is the wordplay.
I cannot quite understand how this works, but
'a' could be 'an' and 'an' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for layman that I've seen before include "member of the congregation" , "He's not a priest or specialist" , "Non-expert" , "He's not clergy or army" , "He is a non-professional or a non-cleric" .)