Pep Guardiola effect #2 - CDM position.
Fernando on #6 during Pellegrini era - @fernandinho on #6 during Guardiola era.
It's a strong matter of details, nothing very complicated. During cognitive process, reducing the blind zone by "checking shoulders" is one, but flunet changing of body position, basing on position of the ball and player's position in formation is also very important.
