They may well be keepers (7)

I believe the answer is:

finders

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

This clue could be a double definition.

'they' is the first definition.
Both the answer and definition are plural nouns.
Maybe you can see an association between them that I don't see?

'well be keepers' is the second definition.
The answer and definition can be both people as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'may' is the link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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