KANSAS CITY CHIEFS:
Matt Cassel was a Pro Bowl quarterback just two years ago, but a healthy Manning would be a step up. A big one.
The Chiefs also have a terrific trio of young playmakers in running back Jamaal Charles, wide receiver Dwayne Bowe and tight end Tony Moeaki. Manning would have people around him to make plays.
And coach Romeo Crennel put the Chiefs in the conversation when he welcomed the idea of having Manning on his team at the NFL combine a few weeks ago.
Still, Kansas City owes Cassel $5.25 million this year, $7.5 million next year and $9 million in 2014 — a hefty bill for a backup.
They also have a new offensive coordinator in Brian Daboll, and general manager Scott Pioli is often pretty hands on when it comes to that side of the ball. Would there be a clash?
When the Dolphins hired the offensive-minded Joe Philbin as coach in January, team officials privately said they would go after Manning if he became available.
Miami has money, terrific talent and warm weather: three big selling points for the Dolphins. Manning also has a home there.
The team has started 16 quarterbacks since Marino retired, but Moore played well last year after Chad Henne was sidelined by a season-ending shoulder injury. There are doubts, though, that Moore is a franchise quarterback, and if the Dolphins don't sign Manning, they may pursue Green Bay's Matt Flynn or try to trade up and draft a quarterback in the first round.
NEW YORK JETS:
Ryan has repeatedly expressed his admiration and respect for Manning, and the Jets aren't far removed from winning. They went to consecutive AFC championship games before in-fighting contributed to the team finishing 8-8 and missing the playoffs.
Sanchez has been the face of the franchise since they traded up to draft him fifth overall in 2009, but the Jets have said they will look at every position if they can improve. They also had Tom Moore, Manning's former offensive coordinator, as a consultant last season — although it's unclear if he'll be back.
Despite the Jets' recent success under Ryan, the locker-room discord might be a deterrent for Manning. He also might be unwilling to play in the circus atmosphere of New York, a town in which Eli has become a huge star. Think the city's media would play up the sibling rivalry?
Salary cap issues also might prevent the Jets from being a true contender, financially.
Seattle has its franchise running back in Marshawn Lynch, and seems to be solid on the outside with receivers Sidney Rice, Mike Williams, Doug Baldwin and tight end Zach Miller. The offensive line is young and improved, but the remaining question for Seattle's offense is at quarterback.
Tarvaris Jackson toughed his way through a painful pectoral injury for more than half of last season, but was never overly impressive. Manning could be the answer.
Still, Jackson has never been given much of a chance as a starter and played fairly well while battling his injury and was respected in the locker room.
Fans have already started a "Come Back, Peyton" campaign, with billboards and radio ads pushing for Manning to return to Tennessee, where he starred in college for the Vols.
The Titans drafted Jake Locker with the No. 8 pick last April and signed Matt Hasselbeck to a three-year deal last July, but they went 9-7. They have around $30 million in cap space they need to use on finding a pass rush.
While a happy homecoming would make for a nice story, general manager Ruston Webster has said twice in the past month — to season-ticket holders — and at the NFL combine that the team is happy with its quarterbacks.
Owner Dan Snyder always seems to be in play when it comes to signing big-name free agents, and the Redskins are in major need of a quarterback.