Of course, football is full of surprises. My biggest shock will be for Arsenal to win Madrid, because I have never expected that to happen even in my dreams. Arsenal is strong and are in form but it will be very difficult for them to go beyond the quarter finals, because of the opponent that they will face. We know how Madrid do take their UCL matches very serious than every other competition.
Arsenal have met a fairly serious obstacle in the quarter-finals of the Champions League this season because everyone knows how strong Real Madrid are when playing in the Champions League so it is very likely that Arsenal will have a hard time qualifying for the next round in the Champions League this season. In addition, Arsenal's strength this season is still not that good when compared to other teams in the Premier League so the possibility of being able to eliminate Real Madrid from the Champions League this season is very difficult for Arsenal.