Very sorry but I really can't agree with disciplined, well-organized defending. It was shambolic at both ends. Otamendi was disastrous, he runs around like a headless chicken. If it wasn't for the inexplicable one-on-one miss by Ibrahimovic in the first half, it would've been severely punished.
Mangala did very well on a personal level and with some good tactical & positional guidance (Vinny!) I'm sure he could become a great CB. For Otamendi I have no hope.
Let's face it, if PSG would've been their normal efficient selves, City would've been 2-0 down halfway the first half perhaps even with ten man. I think a lot of referees would've given that first penalty shout and a red card on top of it. There's arguments in favor and against, but PSG had a very strong case there in my view (a lot stronger than the actual penalty they got).
Clichy was not good either. Stupidest of yellow cards by the sideline, totally uncalled for. Also lost posession without being under threat a fair number of times. I thought Sagna did a lot better at the other end, but just like Clichy played way too far from the PSG winger. Every time their wing backes moved forward in the second half there was no City player even close to them, they could freely control the ball, run forward a bit more, pick out their best foot and swing in a lovely cross for Ibra, Cavani and the others.
So organizationally, positionally, tactically, City defense was all over the place. Strong guidance required.
Apart from that City fought hard, looked good going forward and deserved the result. But it could've been a totally different story with Ibra in his normal form.
Sorry to disagree guys.