Manning's people now claim at least 12 teams are interested. Some have made that interest public, and I've listed those teams on this page. And yes, I've also listed the Niners.
It's my opinion that if the dude really is healthy, and there's a chance that he's not and never will be, he'll want to go to a team that has an outside shot at winning the whole ball of wax. In other words, he's not going to a team that finished with two or three wins from the previous season. He wants a team that is ready to go RIGHT NOW, and the final piece that this team needs is a QB like Peyton Manning.
So? Where does the most celebrated free agent in the NFL go?