Crossword Genius

A barman taken in by landlord's agreement is the type that's bound to be hired (8)


I believe the answer is:

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'hired' is the definition.
Both the answer and definition are adjectives.
Perhaps they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Another definition for leasable that I've seen is "can be rented".)

I've seen this clue in Irish Times.