Bills sign backup QB Anderson to one-year contract

The Buffalo Bills have signed veteran quarterback Derek Anderson to a one-year contract, the team announced Monday.No financial terms were announced.Anderson, 35, joined the Bills in October when rookie quarterback Josh Allen was injured and backup Nathan Peterman was struggling. He started games against Indianapolis and New England, both losses, and didn’t play again in 2018 after suffering a concussion against the Patriots.He ended the season 42-of-70 passing for 465 yards, throwing four interceptions and no touchdown passes.Once Anderson entered concussion protocol, the Bills turned to another veteran, Matt Barkley, to fill the position until Allen’s return. Buffalo last week announced Barkley had signed a two-year contract.Both Allen and head coach Sean McDermott have commented on Anderson’s role as a mentor.