Among the leaders in APY (average per year) are Dallas’ Dak Prescott ($60 million), Jacksonville’s Trevor Lawrence ($55 million), Green Bay’s Jordan Love ($55 million) and Miami’s Tua Tagovailoa ($53.1 million). Purdy has more value to the 49ers than all of those players.

Purdy said he's been impressed by how eager Pearsall is to learn: "He’s got the drive and he’s got the ‘it’ factor.”

The 49ers are on the verge of committing themselves long-term to Brock Purdy. So what does he need to be successful?