Real Madrid need to finish next quarter final with 3-0 scoreline to take the game to penalty shootouts. If Arsenal score one goal then Real Madrid has to score four goals to take the game to penalty shootouts. If Real Madrid directly want to qualify for semi finals without penalty shootouts then have to finish the scoreline 4-0. I don't think Arsenal will play that bad in next quarter final after giving there best in first leg. From my point of view, it will be worthy to place money on Arsenal for next leg then on Real Madrid.
I don’t think it’s going to be possible for Real Madrid to score three goals without Arsenal scoring any goal, we should all know that Real Madrid defense is kind of poor, and Arsenal are going to be playing with their full force, so even if Arsenal can’t score in the match, then they not going to give Real Madrid the opportunity to score so many goals in the match, and if Real Madrid can score, then we should expect Arsenal to score also.
The mistake which Real Madrid made was allowing Arsenal score three goals in the first leg of the match, that’s kind of much, Arsenal is not a weak club that will just allow Real Madrid score 3 goals without scoring any goal. The match has not been played yet, but I just have the feelings that Real Madrid are already out of the champions league.