Pulling a blade, leader's left unsettled (5)

I believe the answer is:

owing

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'unsettled' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for owing that I've seen before include "Undischarged" , "Unsettled; on account" , "Outstanding as a debt" , "Due to, like debt" , "This debt has yet to be paid" .)

I've seen this clue in The Times.

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