Alter maybe, but not now (5)

I believe the answer is:

later

'not now' is the definition.
(I've seen this before)

'alter maybe' is the wordplay.
'maybe' indicates an anagram.
'alter' with letters rearranged gives 'LATER'.

'but' is the link.

(Other definitions for later that I've seen before include "succeeding" , "In due course" , "At some time afterwards" , "Eventually" , "after the rest?" .)

I've seen this clue in the Evening Standard.

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