Emery later said: "We compete very well in the first half, there weren't very many chances from them.
"We weren't clinical because they were defending very well and we didn't control the game. The match was controlled more or less in the plan we prepared.
"In the second half, the first two goals were crazy. After the red card it was more difficult to get a result.
"We have to control our emotions, even when we are losing 2-0. We have a responsibility to be mature. We are still fourth in the table but of course we have to accept to lose. Today we weren't clinical and we weren't better than the opponent. Then we lost control of our emotions and the red card was disappointing for me.
"Of course John McGinn is always very, very important. He wishes to compete after the second goal.
"Then the match was difficult to come back. They score two goals. Still, there is two points difference but they have one match in hand. Of course we have to move on.
"Now we are thinking of Thursday. We have a very good match against Ajax, that is our focus."