Not impressive but I've said before I expect change to take time.
One major worry is Ozil, he's always been a guy who doesn't care to make the tackle, to back off. Yes he tracks a couple of runs but he also jogs slow as hell when he could be helping for that first goal. He's never killed himself or pushed himself hard and with his lets be honest, final big contract secured does he have a single reason to try hard now? He can not play and get paid till the end of his contract, no one is going to top it and he now has even less reason to try than before when he never tried that hard anyway.
He was god awful today, he was getting every run wrong, he was missing simple passes, that gift of a chance being passed the ball by the keeper and both his loose touch and I think he told Laca to leave it when he could easily have got it and was onside. The other chance which came through, Ozil was clearly offside and Laca was borderline onside and Ozil didn't leave it for Laca.
Dozy is, interesting, he's very like Luiz in that he does some classy passing but it always feels like classy moments waiting for the absolutely huge impending screw up. Young but, he feels clumsy and nothing screams he's going to be a great player.
Not sure why we didn't start Torreira but he looked fairly classy when he came on, some good passing, good tracking. One moment I loved was in the box our right back and CB were standing off whoever it was inside the box close to the line. Torreira didn't just stand off and passively let them wait to make their move, he closed him down and straight up scared him back out of the box and forced him to pass backwards.
Laca was decent in that he was very physical and closed down well, got called for several fouls that were just really great work and brilliant strength to win the ball back though he also committed a few too many as fouls which pushed the referee into giving the rest as fouls.
I feel both Laca and Auba should have done better with their chances but that's how it goes.
Xhaka was terrible, Sokratis seriously, he leaned out of the line of the ball for both goals, missing them by inches. Lean the other way and we maybe fluke a draw despite being the much worse team. There are a lot of CBs who would have thrown themselves in the way of those shots and done a lot better.
Again I think it's worth noting that most sides take a while to adapt and Arsenal is the team with the longest serving manager and a squad that though it had changes had guys in it who were around for long enough that we had a fairly established style and mentality for a very long time. I think while teams can adapt faster or slower, Arsenal is a side essentially set up to adapt slower than any other side could or would.
Cech.... guy has entirely lost his marbles.