De Bruyne out wide was giving the ball away in bad positions, usually when he tried to come back inside. Luckily, he's dynamite in the hole.
If Zab was at full speed, and Kompany playing regularly, I'd go back to Pablo overlapping Silva on the right.
There's seriously no point playing PZ behind Navas. His game depends on him being able to do everything decisively - pass into tight areas, run forward, and tackle - without second guessing. He can't do this because Ota is killing him with bad balls and wanderlust, and he'll never overlap Navas.
He's just left hanging around waiting for things to happen. He's just not that sort of player and he's not that sort of defender. As much as he is an overlapping attacker, he's an all action, tackle back, hit hard, last ditch defender. You kinda can't have one without the other.
I accept he's slowed, but he's always had a few problems when players stand him up or cut inside. And it can't help that he never gets a run in the team, let alone in his overlapping role. I just hope he recovers, he could be big next season.