As for Dembele I think that this is the first time that he has not been injured several times in a row and it is difficult for him to adapt a bit because the injuries have kept him out of the field, but we are sure that Dembele is a beast and that he can catch a good level if he does his part therefore we will have to wait a year to see the evolution of Dembele. Barca is improving little by little and that's a good sign, now all they need to do is have a good transfer market and start playing with the Barca DNA and it will take time but maybe in two years they can be at the top of their game
Honestly Dembele or not, Barcelona should have been better so far, and should not be happy that they got a draw out of Sevilla game. That is their situation right now, they are quite happy that they managed to get a draw against Sevilla which is humiliating for them if you ask me.Dembele could make a comeback and play with 100% and be a beast and that would still not be enough for Barcelona, they need to change the whole roster if you ask me. Their success came from having great youth team with la masia, and their demise came from them spending silly amounts on transfers and buying players outside of their club. Maybe they should look back into their youth team and try to find some more gems like Fati, that could be a lot better for them.
These are all jokes, but Atletico are not like themselves now. Real already in the 7th minute of the match wins 0:2, I think this is a very serious claim to win this match. While writing the post, Atletico have already won back one goal, an interesting match is planned for us. 
