Case in point Leicester last season who had two of the slowest centre backs in the world and were hugely effective sitting deep and hitting on the break. Obviously having Kante and his frenetic energy in front of them helped too but only having to attack the ball in front of them meant Huth and Morgan's lack of pace was rarely exploited.
It worked for Leicester because they played classic counter attacking football. With Huth and Morgan at the back, then Kante sitting in front, they played long balls to to the flanks, with Vardy running through the channels.