 Subsequently, Walker was claimed off waivers by the Philadelphia Eagles during the 2000 season, where he played through the 2006 season.He was then traded on March 26, 2007 (along with a conditional 2008 draft pick) to the Buffalo Bills for linebacker Takeo Spikes and quarterback Kelly Holcomb.However, there was a proviso to that trade stating that if Walker did not report to Bills training camp by August 5, 2007, he would be returned to the Eagles in exchange for a sixth-round draft pick in 2008.