That's all speculation by the writer. Not once in that article does it quote Staley or refer to Staley saying what kind of defense he will run with the Saints.
What has Staley himself said about what kind of defense he will run with the Saints?
Why do you refuse to believe that Staley is going to run the same base 3-4 defense, including some versions of the Nickle with 3 or 3 DL? It's his scheme it's what he is going to run. He may run more 4-3 than he would if he has more time to pick his personnel. But it's going to be the same scheme he has always run with some odd fronts and some even fronts.