Provide only a version (3,2)

I think it could be either:

Which length description are you looking for?:

3,2

lay on

'provide' is the definition.
(I've seen this before)

'only a version' is the wordplay.
'version' is an anagram indicator.
'only'+'a'='onlya'
'onlya' anagrammed gives 'LAY ON'.

(Other definitions for lay on that I've seen before include "instruction for Macduff" , "Provide (something)" , "Provide (food, etc)" .)

I've seen this clue in the Evening Standard.

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