Does 2023 interest in Tom Brady mean 49ers will consider alternatives to Brock Purdy in 2024?

Last week, 49ers quarterback Brock Purdy said the team tried to get Tom Brady to be the starter in 2023. Obviously, they didn't.The situation invites curiosity as to whether they'll try something similar for 2024.No, they likely won't try to get Brady again. (Unless they do.) However, quarterback Kirk Cousins is slated for unrestricted free agency in March. Coach Kyle Shanahan and Cousins have long been linked. Six days before Cousins suffered a torn Achilles tendon, he had arguably the best game of his career on a Monday night against the 49ers.The final decision likely will depend on what Purdy does when the stakes are the highest. He didn't have a spectacular game on Saturday night against the Packers, but San Francisco won. If Purdy doesn't have a great game in either the NFC Championship or, if they win, in the Super Bowl (and they lose), will Shanahan's eye wander again?He's been searching for quarterback nirvana ever since he joined the 49ers in 2017. Initially, he was waiting for Cousins to become a free agent in 2018. That prompted Shanahan to not take a close look at Patrick Mahomes in the draft, where the 49ers held the second overall pick. Along the way to signing...