Now before everybody losses their mind, consider: Cardinals are rumored to be going after Murray. That probably leaves Rosen as expendable. Opinions on what it costs to get Rosen are all over the place. I think it's reasonable to think that you might be able to get him for a 3rd Rd pick.
Now a 3rd Rd pick is valuable for sure but lets say they would trade him for a 3rd, would you do this? While Rosen was with the Cards, their Offense was horrible and their OL was worse. Certainly not all of it was on Rosen but some of it was. He needs to be developed but lets say you traded for him. What you get is a kid with a lot of natural ability to throw the ball. Rosen has talent, there is no question about that. The real question is, does he have the rest of it? I don't think anybody can really know for sure what Rosen is, in that Cardinal Offense. Just too many holes and not enough talent around him. However, if you could trade for him, he immediately becomes the best backup option the Cowboys have on the team and who knows how good he might be behind our OL and with our skilled players? At the very least, he becomes a guy who can be a solid backup IMO. But more then that, he provides more leverage in negotiations with Dak. If the Cowboys go out and get Rosen, they immediately have an option at QB if Dak is unwilling to sign a reasonable deal or decides to hold out. It gives the Cowboys an option and gives them a year to let him learn the Offense. The Cowboys would not be in a position where they have to accept any terms Dak's agent gives them. Could very well drive a lower cost associated with Dak in negotiations. If he ends up being your starter, you have 4 years of a Rookie deal which allows you to use that cap to strengthen the team around a Rosen, if it comes to that. There are a lot of positives I can see to a trade for Rosen, assuming you don't have to spend a lot to get him. He might not be a bad option for the Cowboys to consider. He serves a purpose on the team. He provides a lot of flexibility if he has to become the starter. He gives you a very manageable cap number for another 4 years, he has starting experience and he can provide leverage in any Dak negotiation. He might be worth a 3rd round pick if he can save you from having to spend 30 million for 6 years as opposed to 25?