"The other one was the fact I told my players 20 times (Julian) Draxler wants to come inside for his right foot. It was also a mistake in the box."
Mourinho felt the performance of Didier Drogba – playing for Chelsea in the Champions League for the first time since his penalty secured the 2012 European Cup – was "positive".
The Blues boss was frustrated to once again be asked about his choice of goalkeeper after again selecting Thibaut Courtois ahead of Petr Cech.
"I don’t accept that you ask me about the goalkeeper every week," Mourinho added.
"For me it’s just a decision and I can’t say more than I say. What I say is that I have two fantastic goalkeepers, two of the best three goalkeepers in the world. And it’s a fantastic situation for Chelsea."