It is absolutely true that Arsenal could be a surprise for Real Madrid, although Madrid are the favourites and everyone knows that. But it should not be ruled out that even the slightest threat must be taken into account. This is a battle for the most important round in the Champions League and I still hope for both teams to show maximum performance, on-fire conditions and of course a little drama on the pitch.
As long as Saka recovered before April 9, then yeah probably Arsenal could make a surprise, if they played without Saka, I would say Real Madrid will surely win the match. Arsenal without Saka is really struggling to win, their past history can lost against weak teams or ended in draw.
I think Aston Villa and Dortmund have no chance of qualifying for the next round... About Inter vs Bayern and Madrid vs Arsenal it's really hard to guess the winners... Although Madrid have a lot of experience of playing against English teams in the UCL, I think they will have a better chance of winning... Although I don't rule out surprises in these matches...
For Madrid vs Arsenal, I predict Madrid will win.
As for Inter vs Bayern Munich, it's really a big match, one team is offensive while the another one is defensive, since football is about the highest goals win the match, I vote for Bayern Munich.