Mikel Arteta says penalty given to Sunderland is...

Mikel Arteta says penalty given to Sunderland is “unacceptable”.“Look, the first question we have to discuss is that this is NOT ACCEPTABLE at this level. "It was a beautiful game of football, with two teams and an atmosphere in the stadium that was unbelievable, with Sunderland they are so organised; they are so good in so many phases, they have great players, they created a lot of issues we had to cope with. "We had to cope with all of that, it was a lot in a really difficult week after Chelsea and Napoli, and on top of that we have to go through what we've done today that in my opinion is NOT ACCEPTABLE. "I watched it 20 times, and I CANNOT find a way to understand how they even think to give a penalty in that situation, or the way the VAR has to intervene. "So I don't know what to think, but I'm SAD that we have to discuss in such a beautiful game something at this level that has the gravity of that, because that CHANGES the course of the season and can cost you the championship. "At this level, with all the work that we put in, this cannot happen. I cannot find an explanation - that's why I'm going to try and find an explanation now. "I want to be talking about how good we were, how good Sunderland were, and the level of the league and how beautiful this is - we should not be talking about that. "I cannot find an explanation - that's why I'm going to try and find an explanation now."