Given our situation, giving up on possession is a potential masterstroke. If you have a clinically striker (we do), can break at speed (with Moura and Son, we can), and most importantly have a rock solid defence and goalkeeper, then perhaps it is exactly how we need to play for the time being.
I think the tactic of having at most 40 percent possession is here to stay under Mourinho. Possession based football is heavily attritional; it's like letting a boxer wear himself out with punches, then doing a Tyson peekaboo and putting him to the floor.