When we talk about possession football I always remember the foundation, the dutch school with Rinus Michels, Cruyff, LVG... all those systems that revolve around triangles to get advantages in every spot of the pitch. Right now Guardiola lacks two apexs in the two first triangles, the GK-CB-FB and then the CB-FB-DM, Bravo and Yaya are proven players in that system knowing they come from Barcelona and did pretty good, but Sagna, Clichy, Otamendi or Stones lack either the skills or the composure to build the play from their own goal