I don’t think it’s just the two central midfielders, it’s also the left and right wingers who are also midfielders and not forwards. They need to do their defensive duties. We have an abundance of left forwards, not wingers, Richarlison could do it but would be wasted out there.
Saul and Koke at Atletico have work rate, they are physical and composed under pressure. Iwobi for example has the first two.
I like the look of what Arteta has done with Arsenal and his pressing 3-4-3. I would imagine our current squad fits this system better.