Crossword Genius

One's concerned with gander, escape curtailed, being returned? (9)

Ross

I believe the answer is:

zookeeper

I'm a little stuck... Click here to teach me more about this clue!

'one's concerned with gander escape curtailed' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'being returned?' is the wordplay.
I cannot really see how this works, but
'being' could be 'keeper' (keeper is a kind of being) and 'keeper' is present in the answer.
The remaining letters 'zoo' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for zookeeper that I've seen before include "Lions manager perhaps" , "park attendant?" .)

I've seen this clue in The Times.
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