It's failed because of personnel. Remember when it was Aguero and Jesus together, along with Mendy and Walker, and Danilo in a back 3? It looked fine. Now we can go back 3 given the pace of Aké, and possibly Koulibaly if he signs. Laporte in middle, and Cancelo/Walker along with Mendy as wingbacks.Why do people suggest "3 at the back" ?
Pep's tried it, it fails nearly every time.