‘After losing OT Brad Butler to retirement, the Bills will address the position hard in free agency and the draft, coach Chan Gailey said. "With the retirement of Brad, that puts us in position of need, even moreso than we were," Gailey said. Led by Oklahoma State’s Russell Okung, Rutgers’ Anthony Davis, Oklahoma’s Trent Williams, Iowa’s Bryan Bulaga and Maryland’s Bruce Campbell, this is a banner year for college tackles.’