If the draft were held today, apparently the Cards would be picking between 10 and 15. We could get players like Sam Baker (OT, Southern Cal), Gosder Cherlius (OT, Boston College), Frank Okam (DT, Texas--Would replace Antonio Smith at DE), or Terrell Thomas (CB, Southern Cal).
What we should do is cross our fingers that Quentin Groves (DE, Auburn) falls to the Cardinals. At 6'3", 250, he'd be ideal for the Bert Berry/Calvin Pace position in the defense.
DE/OLB is a situation that has to be addressed as a top priority. The team will likely keep Okeafor and Pace, but a third player with high value is a necessity.