Arsenal boss Mikel Arteta told BBC Sport: “The first goal was the most disappointing, we were in control of the game, we took the game exactly where we wanted to.
"The first action they have, we fail to stop the cross and Gundogan has a free header in the middle of goal. If you want to in this stadium, these are the basics you have to do right.
"The second goal we concede is a clear foul because he punches Calum [Chambers] in the face. Once we conceded after the red card you know what is going to happen.
“It’s a really quick action from [Granit] Xhaka, he tries to get his feet off the ground and the ref decided it was a red card."
On the approach in the second half: “I was concerned because mentally it is a relly tough one to take, after the third goal you are going to play 60 minutes with 10 men against the best team in the league.
"You can go down and you can start to see body languages and attitudes towards each other that can worry me, I didn’t see that.
"I have to say thank you the 3,000 fans, they were terrific. I think the players did well to go and thank that."
On what needs to happen going forward: “For me it is pride and more willingness to change the situation. A lot happened in the last three weeks we are in a difficult position.
“The international break will do us some good to recover some of the big players we are missing at the moment and hopefully we come back we are in a better place."
Manchester City boss Pep Guardiola spoke to BBC Sport: “We scored a goal that we didn’t deserve. We didn’t play that good to score a goal.
"The first time we arrived in the Arsenal half we scored. We had problems in the fist 15-20 minutes in our build up. After 2-0 and sending off the game is completely different."
On what he wanted to see in the second half: “Respect the opponent, be serious in our process and our job. We created chances, we scored two more, the most important thing is that we played with respect to the opponent and not do silly things with the ball. We are still in the process of improving. Like I said to the players after the game. It was nice winning today but we have to be better."
On Mikel Arteta: “Arteta knows how I love him. In the two or three years he was here he was important to what we built. People want results right away, with the players he had today, Ben White, Thomas Partey were missing, many players they invested in were missing, without that it is difficult.
"I know his awareness as a manager and as a leader, the moment everyone is back he will do an excellent job. I know this because I know him, I know the job he can do."