Painter outside grand bar that's attractive (6)
I believe the answer is:
'bar that's attractive' is the definition.
(attractive bar of metal)
'painter outside grand' is the wordplay.
'painter' becomes 'manet' (I've seen this before).
'outside' indicates putting letters inside.
'grand' becomes 'g' (G is short for grand as in a thousand).
'manet' going around 'g' is 'MAGNET'.
(Other definitions for magnet that I've seen before include "Focus of attraction" , "facility for drawing?" , "drawer?" , "Natural attractor" , "Attractor of iron" .)