I'd be interested in that, assuming we got Dallas' pick at #16. Romo currently has the majority of his contract tied up in signing bonus, which means he would only cost:
Only his 2014 salary would be guaranteed. 7.5m of his 2015 salary would be guaranteed if he's on the roster in 2015.
However, Dallas would incur about 40 million in cap acceleration from his signing bonuses, so it has no chance of happening.