At least Yamal must be guarded more closely because he is too agile and difficult to stop, including Rapinha maybe but not as agile as Yamal.
Inter Milan's defense must not be shaky and they must focus on a certain point because if they fail, it will usually be an opening for the opponent to score.
But fortunately both teams can still breathe a sigh of relief only now in the second leg to be decisive at home to Inter Milan.
It's not about been fragile, the boy is good and it will take another time for him to be stop. When there is a new guy in town, the bad guys do take their time before they understand him fully and how to beat him to his own game and that's exactly what Inter need to do in their own home else they are going to regrets him space.
Alot was learn in the first leg, Inter was dedicated and I'm not sure if they were this prepared to see this side of Inter. If they can go head to head like they did in the first leg, they will get to the final without any hassle.