Kyler Murray. I still he will pick the NFL or MLB because he is going to make more upfront money.
If Murray will play its a no-brainer. Rosen looks really bad, now a lot of rookies look really bad their first year then look really good their second (our main man Mitch!), but I didn't like Rosen coming out of UCLA and like him even less now. I dont even see the standout physical tools. Now could he ride the bench for a couple years, learn the position, and become a decent QB? Yes. But what value is that to Arizona? Oh boy! Just in time for him to hit free agency he looks like he can play!
So they deal Rosen for a top-one hundred pick to a team looking to develop a backup, I bet they could even get top-seventy five or top-fifty for him depending on the buyer, and draft Murray with a new coach and new everything. They lament a totally wasted year but ultimately I think they will be wasting many more years if they stubbornly stick with Josh Rosen as a starting QB.