If Brock Purdy is going to sign a contract extension with the San Francisco 49ers, there's an important person not to forget. SI's Grant Cohn wrote on Wednesday about a potentially complicating factor: agent Kyle Strongin. Strongin, writes Cohn, has never been in a negotiation this big before.

San Francisco 49ers head coach Kyle Shanahan said he expects quarterback Brock Purdy to be a participant in the team's offseason program whether he has a signed extension or not.

Much of the offseason discussion surrounding the San Francisco 49ers has centered around the massive pay raise Brock Purdy is about to receive. But it's easy to forget how the team ended up with him as their starting quarterback in the first place.