I'm wondering what Arsenal will do as of this stage in the Champions League. They had a successful group stage as expected. Now I can say that they have a comfortable matchup to play against Porto as well. Because I don't believe Porto are one of the teams that can eliminate Arsenal in this tournament. Porto couldn't even beat Barcelona in the group stage. I mean that Barcelona aren't weak of course but I don't think they have played better than Arsenal at all. 
Anyway I see Arsenal in the quarter finals already to tell the truth. But they had better improve their performance more as there is some decline recently.
Am just scared since we managed to scale through the first league and the next stage is going to be more challenging because Arsenal as not been doing well in the Premier League so it will be even more difficult to win the Champions league. Have you forgotten that Barcelona are the defending champions in la Liga so you should not expect less from them if Arsenal should win against them. Then it will be a bonus for them. But even after that win I dont see us going far. And even with Barcelona winning against Porto is funny doh even in their bad condition. Arsenal's performance as not been of their best recently so its high time they start fixing their problems. Anyway I see Arsenal in the quarter finals already to tell the truth. But they had better improve their performance more as there is some decline recently.