Peyton Manning won't be a Dolphin or a Cardinal. But he could still join the Titans, the Broncos or even – get ready for this – the 49ers. The race to sign the NFL's only four-time MVP and the most prized free agent of the offseason heated up Friday as Broncos executive John Elway and coach John Fox watched the star quarterback throw at Duke and San Francisco was revealed as a stealth suitor.