One's concerned with gander, escape curtailed, being returned? (9)
I believe the answer is:
zookeeper
'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?" .)