"Peyton Manning in a Cowboys uniform?

At first thought, that sounds like a pretty good idea. Who wouldn't want a future Hall of Famer quarterbacking their team?

Then reality creeps in.

First and foremost, it will never happen because of the salary cap. While trading Tony Romo to make room for Manning would be the optimal move, either trading or outright cutting Romo carries salary-cap implications and the hit would likely handcuff the Cowboys from making any other moves.

And if you have Peyton Manning quarterbacking your team, you might want to upgrade that offensive line which got Romo sacked 36 times last season."