3 at the back would also mean we wouldn't be caught out on the counter when the full backs go missing (as much) as there would be an extra man back.All these CBs might mean we'll go 3 at the back, though at the very least it's a tactical option in certain games. That would allow Suarez and Sturridge to play together up front and give us defensive solidarity with Johnson and Cissokho as WBs.