Knight concerned with clairvoyant reportedly seeking no financial gain (9)
I believe the answer is:
nonprofit
'knight concerned with clairvoyant reportedly' is the definition.
I can't judge whether this defines the answer.
'no financial gain' is the wordplay.
'no' becomes 'non' (I've seen this in other clues).
'financial gain' becomes 'profit' (profit is a kind of financial gain).
'non'+'profit'='NONPROFIT'
'seeking' acts as a link.
Can you help me to learn more?
(Another definition for nonprofit that I've seen is " Nothing to gain by it!".)