Green's naked – can't possibly perform again (7)
I believe the answer is:
reenact
'perform again' is the definition.
(I've seen this before)
'green's naked can't possibly' is the wordplay.
'naked' says to take the centre (outside letters removed so centre is unclothed).
'possibly' indicates an anagram.
The middle of 'green' is 'ree'.
'cant' with letters rearranged gives 'nact'.
'ree'+'nact'='REENACT'
(Other definitions for reenact that I've seen before include "Recreate (past event)" , "Reconstruct in action" , "Reproduce" , "put through again" , "Re-ordain" .)