Jackson has long thought to be a trade piece for the Seahawks as the quarterback competition quickly became a two-horse race between Matt Flynn and Russell Wilson this training camp. The team even went so far as to announce that Jackson would most likely be traded following last Friday's exhibition game.
Jackson came to the Seahawks in 2011 after spending his first five seasons with theMinnesota Vikings. He started 15 games for the Seahawks last year, passing for 3,091 yards and 14 touchdowns. He also threw 13 interceptions.
He will join the Buffalo Bills behind starter Ryan Fitzpatrick. Jackson will compete for playing time against the teams two primary backups Vince Young and Tyler Thigpen.