This is cute. Albeit, far from realistic. To draft Manziel would be ignoring every single need we have on the Defensive Side of the Ball, which is plenty. Finding another Quarterback is a pressing matter as Romo only has a few years left in him. But my jaw would be on the floor if Dallas took Manziel. Out of shock.
With that said, I'll play devil's advocate. If Johnny could go anywhere and succeed, it would be Dallas. His play-style is very similar to that of Romo's and he'd get two to three years on the bench to learn. That's if Romo isn't the victim of another brutal injury this season. On top of that, he'd be at home in Texas and would already have a really good following down here. But people around these parts don't like the idea of Manziel potentially doing well at the next level, so I won't continue any further with that thought.