Having to return to get him (4)

I believe the answer is:

otto

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'him' is the definition.

'having to return to' is the wordplay.
'having' becomes 'to' (I can't explain this - if you can you should believe this answer much more).
'to return' shows that the letters should be reversed in order.
'to' back-to-front is 'ot'.
'ot'+'to'='OTTO'

'get' is the link.

Can you help me to learn more?

(Other definitions for otto that I've seen before include "A man" , "Palindromic fragrance" , "German king" , "Name of four German kings" , "He's a German, whichever way you look at it" .)

I've seen this clue in the Evening Standard.

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