...which will only become 5th or 6th rounders now that we HAVE to trade him.
No, no the Cardinals certainly do not have to trade him.
This team fired a 1st year head coach, and replaced him with a sub-.500 college coach.
This team drafted a QB 1st overall, after giving up picks to draft a QB in the top 10 a year before.
Now, it is INSANE, that they keep two QB's ?
In my opinion it would be the most sensible thing this team has done in over a year.
You are not going to get a better QB to play/backup than Rosen, and you certainly can get good value from Rosen, later on.
When Murray gets hurt, you never know what Rosen will do in his place. There are plenty of examples throughout the league history of backups, or the "2nd QB" on a roster fetching good value.
Patience may be the key here.
It is not like the Cardinals are going anywhere higher than the basement of the NFC west and division this year anyway. Still have arguably the worst roster in the league, and I am sure Keim has his eye on the smallest stature, and smallest school prospect for number #33, and perhaps drafting a defensive tackle to play wide receiver in the third.