Keim supposedly had offers for Rosen before draft but didn't like them. Of course he didn't because everyone knew they were taking Murray so no one was going to make them a legit offer.
Still trying to figure out how some people seem to think Keim could've shopped Rosen without tipping his hand that he was planning to take Murray and move on from Rosen.
If you shop your starting QB, everyone knows you're planning to move on from him. To an interested team, his value is propped up only by the concern that other interested teams could offer more.
I'd guess that any team with even the remotest willingness to offer a first-round pick wanted to wait and see who was on the board when their pick came up before pulling the trigger. For example, had the Giants taken Haskins, perhaps the Redskins would've pulled the trigger on a trade.
I think Keim had to wait until the draft played out for any chance to get a first-rounder, and it didn't play out well for the Cardinals, so now he needs to hope that the few teams left with any interest in a QB (Miami, SD, NE) are sufficiently interested to give up a 2nd, in order to prevent one of the others from getting him. And even now... a team like Miami might wait to see whether Lock falls to them. Or someone else they love might be on the board when their 2nd-rounder comes up, and they might forget all about Rosen.
The market just isn't there, and there's no other way Keim could've played it. This was an inevitable result of Rosen's awful rookie season and the decision to draft Murray.
...dbs