According to a report, new Lions’ coach Jim Caldwell will add a second former NFL defensive coordinator to his staff.

Alan Williams will be hired as the Lions' defensive backfield coach according to Chris Tomasson of the St. Paul Pioneer Press.

Williams was the Vikings’ defensive coordinator for the past two seasons. He was fired when the Vikings fired Leslie Frazier and cleaned house. The Vikings had the NFL’s 31st ranked defense in 2013 allowing 397.8 yards per game.

Caldwell and Williams worked together on the Tampa Bay Bucs and Indianapolis Colts. Williams was the defensive backs coach for the Colts from 2002-2011.

Teryl Austin, the Ravens secondary coach from 2011-13, will be the Lions new defensive coordinator.

Last week Caldwell hired Bill Sheridan, former Giants and Bucs defensive coordinator, to coach the Lions’ linebackers.

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