I exchanged a quick text with David today and he did say that the coaches are definitely looking at him at tight end, but haven't ruled out the possibility of quarterback either. In looking back at my questions I asked him, specific position was never really brought up so I apologize for that. Either way, he's getting a lot of attention from the staff and his interest level is high. He's still a name to watch at either position.
spoiler alert: i linked this