Peyton Manning is most likely going to be a free agent soon once the Indianapolis Colts decide they're not going to pay his $28 million bonus. Following his release, there will be even more speculation about where he will sign.
One place he should not and probably will not sign is with the Denver Broncos. The pairing simply does not make sense for either side and there are several factors that should keep a potential deal from ever happening.
The environment in Denver is not ready for a new quarterback. Fans are attracted to media mega-hype of Tim Tebow and would be unreceptive to the acquisition of a new starter. Tebow's jersey is still selling in tremendous numbers and some will remember the billboard paid by fans telling Denver to start Tebow.
Denver's offensive scheme makes little sense for Manning, as seen in their first-ranked rushing offense and bottom tier passing offense under first-year coach John Fox. The run oriented Denver offense would have to be altered significantly to accommodate the signing of Manning. Fox expressed a run-heavy mentality prior to the jettison of Kyle Orton in favor of golden boy Tebow, with the option offense only furthering the run first attitude.
This is where coordinator Mike McCoy comes in. With Fox being a defensive-minded coach, he left the offensive game calling up to McCoy, who will not likely be willing to hand over his power to Manning the instant he signs. Manning enjoyed complete control of the offense in Indianapolis and it is speculated that he expects the same wherever he signs.
Because of his injury concerns, there is also the necessity of a good offensive line wherever Manning ends up. Indianapolis had a very good pass blocking offensive line, but Denver has one of the worst in the league. Tebow's 33 sacks are evidence of this fault with Denver's offense.
Bringing in Manning would potentially signal the end of the Tebow era in Denver, as Manning is perhaps one of the worst tutors you could bring in for Tebow. Most scouts and coaches agree that Tebow will never be a true pocket quarterback and Manning is as close to a true pocket quarterback as you'll find in the NFL. If Tebow is to develop as a passer, it needs to fit his strong suits and focus on mobility such as former Denver quarterback Jake Plummer exhibited.
Lastly, there's the issue of whether Manning will be healthy enough to play this season. At this point in time, there simply aren't enough positives for Denver to justify taking on Manning this season—from both Manning's and Denver's viewpoints.