because this left central defender often goes higher and right stay 'alone' in line with player...so he can make a offside trap without good partnership with other CB (what happens often is that one of them would be too late)
I have written how i just test this tactic -want to say that all movement were same for big teams like man utd and for smaller teams like hajduk split,so you dont need excelent player for having this type of possession..i started season with man utd and i was 1st 6w 0d 0l ,but i actually play...
this is first game...in post "http://www.fm-base.co.uk/forum/football-manager-2014-tactics/155757-pep-guardiola-possession-style-tactic.html" i say that in first game you wont have so much goals ,than you'll have 3+ ...read that