They had a great season, going 13-3 and advancing to the AFC Championship Game before losing to the Chiefs, but the Bills have some things to figure out. Their offensive performance in three playoff games was mediocre, and they could lose a pair of starting offensive linemen — Daryl Williams and Jon Feliciano — in free agency. Defensively, the team could lose linebacker Matt Milano. The good news for the Bills is that Sean McDermott brings back offensive coordinator Brian Daboll and defensive coordinator Leslie Frazier. If Josh Allen and Stefon Diggs can build on their 2020 performance, the Bills should be right behind the Chiefs as contenders in the AFC.