Brock Purdy's impending contract extension will rightfully dominate the quarterback conversation around the San Francisco 49ers this offseason, but it's not the lone question mark at the QB position for them.

The 49ers haven’t been shy about paying big bucks, and haven’t always received a good return on their investment.

All signs point toward the San Francisco 49ers and quarterback Brock Purdy coming to an agreement on a long-term contract extension in the offseason that makes Purdy one of the highest-paid QBs in the NFL.