This is what I see happening. Loomis and company are aggressively targeting defensive needs. Obviously, there are many needs on defense, including the secondary. By aggressively pursuing Samuel, they are addressing one of their needs. They will likely target a middle tier free agent to fill another defensive need.
The draft, particularly the first 3 rounds will be utilized to grab the best available defensive players. Rounds 1 through 3 may consist of a a couple of defensive lineman and a LB. My guess is that they snag the best available linebacker with the 2nd pick.
I disagree that David will play lights out next season.