Lease that could stand out (5)

I believe the answer is:

easel

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'stand out' is the definition.
'easel' can be an answer for 'stand' (stand for an artist's canvas). I'm unsure of the 'out' bit.

'lease that' is the wordplay.
'lease' can be anagrammed to 'EASEL'.
But, I'm not clear how this is indicated.

'could' acts as a link.

Can you help me to learn more?

(Other definitions for easel that I've seen before include "Artist's prop" , "Painter's frame" , "supporter of board, perhaps" , "Artist's canvas holder" , "Blackboard supporter" .)

I've seen this clue in the Evening Standard.

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