According to the report, the Bills had been attempting to trade Walker, but were unable to do so. BuffaloBills.com has confirmed that the team has re-signed OT Kirk Chambers to fill Walker's vacated roster spot.
Walker became Buffalo's starting left tackle after the Bills traded two-time Pro Bowler Jason Peters to Philadelphia prior to April's NFL Draft. Now, Walker has been released; meanwhile, the man long tabbed as the eventual replacement at left tackle, second-year pro Demetrius Bell, has not practiced in the past week as he deals with a back injury.
It's pretty clear that once healthy - and here's hoping he's healthy, like, right now - Bell will assume the starting left tackle role. As he's never taken a snap at the NFL level, the Bills now essentially have three rookies starting on their offensive line.