I have no idea what Manning is going to do...But I don't think it's crazy to assume there is no way he's going to want to be in the same Division, or City for that matter, as his little Brother...I just don't see it happening...
This decision is going to be up to Manning...It does not really matter who wants him...More than half the NFL is going to want a healthy Peyton Manning...All that matters is where he is most comfortable going...So...Division, Head Coach, Organization, Offensive Coordinator, etc...All this stuff comes into play. Not necessarily who wants him and who gets the most Press (ie...Dallas, NY Jets, Washington).
I would look serious at some dark-horses here...Tennessee is one for sure...Good O-Line and LT...He played there in College and they love him there...Great Half Back...Decent Defense...Unassuming HC...And...Um...The Colts Division... I would say Denver would be another sleeper Pick...And Arizona make a lot of sense...