Eli to Cinci? That sounds like it would be a real stretch. I can't see Cinci getting rid of Dalton that readily, if only due to their cap situation. I also can't see Eli wanting to go there, given that Cinci isn't exactly a Super Bowl contender. They've really lost a lot of steam in recent years. They're on the decline and Eli would probably want to go to a team on the rise.
In that sense, teams like the Jags, Cardinals, and Broncos check all the necessary boxes. Those teams have good defenses and players at the skill positions. They just lack that top level quarterback to get them over the hump. Eli can do that. He has two Super Bowl rings. Love him or hate him, those rings are tangible proof that he can get it done.