Klee as eligible keeps artistic support (5)
I believe the answer is:
easel
'artistic support' is the definition.
(I've seen this before)
'klee as eligible keeps' is the wordplay.
'keeps' indicates the answer is hidden within the clue.
'EASEL' is hidden within 'klee as eligible'.
(Other definitions for easel that I've seen before include "Lease out the stand" , "Lease (anag)" , "Studio frame" , "Framework to hold a canvas" , "Support for artist's canvas" .)