'The 26-year old Glenn has been the anchor of the Bills left side of the line since he broke into the league. He’s started 61 games in four years, including every game over the past three seasons. It's going to be costly to keep him, whether that’s via the franchise tag for one year or a longer deal, because young left tackles who start every game don't come along that often in free agency. Especially ones who were on a team that led the league in rushing. But, Glenn is an extremely important part of what the Bills want to do going forward. They'll most likely do whatever they have to to keep him, even if that means slapping the franchise tag on him.'