MIAMI -- San Francisco 49ers free agent quarterback Alex Smith has left the Miami Dolphins' complex after a 5½-hour meeting with the team.
The visit Sunday could affect the Peyton Manning sweepstakes, because the 49ers are among three finalists for Manning, along with the Denver Broncos and Tennessee Titans.
The 49ers had been working to re-sign Smith, the No. 1 overall 2005 draft pick who enjoyed his best season in 2011 under first-year 49ers coach Jim Harbaugh, a former NFL quarterback. Smith and Manning have the same agent, Tom Condon.
The San Francisco Chronicle, citing a league source, is reporting that Smith is considering changing agents because of a possible conflict of interest.