I guess the understanding before all this was Tebow would no longer be a Bronco if Manning signed with them. Even as a backup.
Simply because it would just be too much of a distraction to have both Manning and Tebow.
I mean maybe he goes to San Francisco

Josh McDaniels I'm sure would love him in New England, but they'd have to move Hoyer (or Mallett) first
If I'm Tebow and the Broncos just flat out cut me I wonder where I'd want to play though