Crossword Genius

Rifles or some whips seem likely (4,7)

Ross

I believe the answer is:

show promise

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

'seem likely' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'rifles or some whips' is the wordplay.
'or some whips' can be anagrammed to 'SHOW PROMISE'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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