That was a great season, we deserved Champions League more than that season when we actually finished 4th.
It was either that season or the season after where we bossed Arsenal for 75 mins and were 2-0 up only for it to be a draw. It was around then we were literally playing some teams off the park. Sure alot of the time we were just playing keepings off, but at least we weren't parking the bus every game like we did for 10 years straight under Moyes.
Then Martinez insisted on playing his way and lost the players, because he insisted on playing two attacking full backs and got destroyed every game and wouldn't change. Just because Barca can do it doesn't mean every other team can.
Same thing with Carlo this season, that's why he's a quality manager, he saw and fixed the SAME issue with 4CB, its a makeshift solution until we get a better one. Carlo is the best.