No where. There is no team that Tebow can start on come week 1. At least for me, he's a jersey seller at the most.
Oakland: Heavily invested in Carr and Schaub.
Buffalo: Maybe here, but they seem to be sold on a healthy Manuel, if not then the next logical option is Thad Lewis who played pretty well (in my opinion) late in the season.
Houston: Fitzpatrick is one of the smartest players in the NFL (48/50 on wonderlic and out of Harvard), Case Keenum is a valuable backup that could earn starting spot, same with Tom Savage. Tebow would have to beat all three.
Jacksonville: Henne is solid starter, as Bortles can be. Tebow is third string at best here.
To me, Tebow may want to look into a tight end or fullback position, QB isn't really for him. But I can see the want to use his mobility. I'm just being logical.