CHICAGO — A supposedly upgraded bench hasn’t looked it.

Newcomers Jordan Clarkson and Guerschon Yabusele, whom the Knicks signed in the summer to create depth that was largely non-existent last season, have struggled to find a groove and earn Mike Brown’s trust.

Yabusele logged just three minutes in Friday night’s 135-125 loss to the Bulls and was benched for the entire second half. It was a troubling sign after the Knicks used most of their cap space to ink Yabusele as their only experienced backup in the front court.

He missed one game with a sprained knee, and is averaging just two points on 23 percent shooting, and just 11 minutes per game.

Brown said he benched Yabusele in Chicago because he was looking for defenders who could switch on screens.

“He may play a whole bunch of mi

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