Restore Magritte perhaps beginning to wear (5)
I believe the answer is:
renew
'restore' is the definition.
(I know that restore is a more specific form of the action renew)
'magritte perhaps beginning to wear' is the wordplay.
'magritte perhaps' becomes 'Rene' (artist Rene Magritte).
'beginning to' indicates taking the first letters.
The initial letter of 'wear' is 'w'.
'rene'+'w'='RENEW'
(Other definitions for renew that I've seen before include "Extend (subscription)" , "Begin again" , "Restore to original state" , "Make afresh" , "Restore (worn out item)" .)