ORCHARD PARK, N.Y. - The Buffalo Bills reshaped their coaching staff Monday by adding Andrew Dees and Eric Thatcher, and reassigning Bob Bicknell, Bob Sanders and Adrian White.

Dees becomes the team's assistant offensive line coach, and Thatcher will serve as the new defensive quality control coach. They both will make their NFL coaching debuts with Buffalo.

Bicknell will coach receivers after coaching tight ends this past season, and White will be the assistant defensive backs coach after serving as the defensive quality control coach since 2008.

Sanders will take over as linebackers coach after coaching just the outside linebackers.

The Bills only need a tight ends coach to complete the staff.

Meanwhile, coach Chan Gailey said Monday that Buffalo's defence will switch from a 3-4 scheme to predominantly a four-man front.

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