Poet's always on board with prophets (5)
I believe the answer is:
seers
'prophets' is the definition.
(both can mean people who see the future)
'poet's always on board' is the wordplay.
I cannot really understand how this works, but
'always' could be 'eer' (poetic way of saying ever) and 'eer' is located in the answer.
'on board' could be 'ss' (I've seen this in other clues) and 'ss' is present in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'with' is the link.
Can you help me to learn more?
(Other definitions for seers that I've seen before include "Visionaries" , "Prophets" , "They divine the future" , "They have visions of the future" , "wise men" .)