Tebow joined the Patriots in June but has struggled during his side's pre-season games as he missed out on the action completely in their 40-9 defeat to the Detroit Lions behind Tom Brady and Ryan Mallett.
"I'm rooting for him big-time. He's been real joy to have around. I see why he has such a strong national following," Kraft told ESPN.
New England begin their regular season campaign against the Buffalo Bills on September 8.