He might be said to finish on a seesaw (4)
I believe the answer is:
esau
'he' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's an association between them I don't understand?
'be said to finish on a seesaw' is the wordplay.
'be' becomes 'owe' (owing is a kind of being).
'said' indicates a 'sounds like' (homophone) clue.
'to' says to put letters next to each other (I've seen this in other clues).
'finish on a seesaw' becomes 'es' (I can't justify this - if you can you should believe this answer much more).
'owe' is a homophone of 'au'.
'au' put after 'es' is 'ESAU'.
'might' acts as a link.
Can you help me to learn more?
(Other definitions for esau that I've seen before include "Jacob's brother (Gen.)" , "Biblical twin to Jacob" , "First son of Isaac (Bible)" , "character in the Bible" , "Cunning hunter" .)