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Manning-to-Denver also creates a fascinating dynamic with Tebow, only months after the former Heisman Trophy winner was the focus of the NFL regular season and perhaps the most talked-about athlete in sports, a polarizing figure both because of his style of play _ as far as possible from a classic, dropback passer _ and his outspoken religious beliefs.

After taking over a struggling team, Tebow led the Broncos to comeback victory after comeback victory, struggling for three quarters before starring in the fourth quarter and overtime. With an offense transformed into a spread option attack built on Tebow’s running, and a strong defense that kept games close, the Broncos won the AFC West title.

Tebowmania reached its apex in the playoffs, when he threw an 80-yard touchdown pass to Demaryius Thomas on the very first play of overtime to beat the Pittsburgh Steelers. The next week, though, Tebow was smothered by the New England Patriots, who easily eliminated the Broncos 45-10.

A little more than two months later, Tebow could be on the trading block.

That’s not the only domino which could fall now that the offseason’s biggest free agency question is seemingly settled.

San Francisco could decide to keep its own free-agent QB, Alex Smith, who went to Miami for a visit with the Dolphins after the 49ers’ flirtation with Manning became public. If Smith does go back to the Niners, perhaps Miami will look to trade for Tebow, who played in college at Florida. The Titans, meanwhile, probably will stick with grooming Jake Locker, who was a first-round draft pick a year ago.

Denver, meanwhile, could try to give Manning some new targets, because they still have millions of dollars in salary-cap space available. The Broncos did not exactly have a wealth of wideouts last season, other than Thomas, and they lost Eddie Royal to the San Diego Chargers as a free agent.