He has bought it and maybe now and again will return to (5)

I believe the answer is:

owner

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

I can't explain the remainder of the clue.

(Other definitions for owner that I've seen before include "The person in legal possession" , "Title-holder" , "The one in lawful possession" , "Man of property" , "The person in lawful possession" .)

I've seen this clue in the Evening Standard.

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