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Whether it be through free agency or in the draft, the Saints need to fill the cupboard up on the defensive side especially since they will be incorporated a brand new scheme that some players just won't fit into.
You name the position, and chances are, the team could use some warm bodies there.
Defensive end in this new scheme could be bone dry outside of Akiem Hicks and Tyrunn Walker. I would like to see Tom Johnson back, but I just think his talent is wasted in a 3-4. (Yes, salary aside, I do think Will Smith would be a perfect 3-4 DE.)
Brodrick Bunkley becoming a cap casualty or not depends heavily on the defensive coordinator that is brought in. If an undersized nose tackle works for their scheme, then by all means, he would be back. But if not, there isn't much in that department either.
Behind Curtis Lofton and David Hawthorne lies no one who is capable of handling the inside position in a 3-4 linebacking corp. The only name that has experience in a 3-4 would be Scott Shanle, and who knows what the Saints decide to do with him now that they have made a switch that tailors to his game. He could be a valuable veteran backup.
Outside linebacker position is the key to this entire puzzle. Martez Wilson and Junior Galette have great potential but are unproven. Braylon Broughton, an undrafted free agent last year out of TCU, could be a name to remember.
The cornerbacks on this roster are just a cluster of muck. The ones who could be salvageable in a 3-4 are Patrick Robinson, Corey White and maybe Johnny Patrick, if he ever gets his head on straight.
Then we come to the safety position that is a strength and, more than likely, will remain untouched. My hope is that Isa Abdul-Quddus is given a chance to star in his third season.
There isn't much left behind the guys I named. That would leave the restocking of this defensive cupboard extremely high on the priority list.