Thus might organised trooper rip into businessman (10)

I believe the answer is:

proprietor

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

'businessman' is the definition.
(proprietor is a kind of businessman)

'thus might organised trooper rip' is the wordplay.
'trooper rip' anagrams to 'PROPRIETOR'.
Though, I am not clear how this is indicated.

'into' acts as a link.

Can you help me to learn more?

(Other definitions for proprietor that I've seen before include "Landlord" , "Business owner" .)

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

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