"It is difficult to swallow a defeat like that. The goals we conceded were difficult to imagine in a Champions League game. What can you do about the second goal? The back-pass was accidental, whenever do you see the defender kick the ball back with his toe?
"The ball hit Sol, it was not on purpose and it has to be intentional to be a free-kick. It is difficult to understand how the referee can interpret that. Then, on an indirect free-kick, if you allow the team to play quickly, just five metres from the goal, how can you defend that?
"It is better than a penalty. It was unbelievable that he allowed Porto to play straightaway and push the ball into the net.
"I have never seen that and I have been in the game a long time. It is difficult to understand. It is completely inappropriate that he allows that in such a situation. When the referee gives the free-kick he has to allow us a chance to defend it, otherwise it is better to give a goal straight away.
"From a situation where there was no goal chance at all, and no free-kick as well, the referee gives them just a goal. It is difficult to understand, but maybe I am not intelligent enough."
"I do not want to come out individually on Lukasz's performance tonight, and judge him in front of everybody. You have to accept you lose as a team and win as a team. Any individual performance has not to be analysed publicly."