Spencer Brown
Many people think that Brown is an outstanding talent and the full package already. However, they are overestimating him because he wasn’t that good in 2021. PFF awarded him a grade of 49.1 for pass protection and this isn’t great at all (via Buffalo News).

There’s plenty of room for him to grow and develop but the Bills have huge ambitions in 2021. They’re a Super Bowl favorite because their team is ready to contend. Brown must show that he’s grown or they’ll leave him behind because there is no room for passengers on this journey.