For the San Francisco 49ers, that's what they have to consider with Brock Purdy. Purdy is very tough to evaluate. Yes, he's won games at the highest level for the 49ers. They also don't have a better option to replace him unless they believe Kyle Shanahan could run their system with anybody,

Fans don't agree with the idea that the 49ers should trade Brock Purdy instead of rewarding him with a new deal in the guise of rebuilding.

The quarterback market has shifted dramatically in the past 12 months, and it hasn't shifted in Brock Purdy's favor.