Of course even though it's a pre-season game this result is a warning to Madrid. Last season they also beat Madrid in the second match. This means that Barcelona is no longer like the beginning of last season. Xavi has indeed changed Barca for the better. They were able to prove last season ended in second position. In addition, this season's transfer market is used by Xavi to make Barca even more powerful. I think tomorrow they are candidates for the La Liga title.
When Raphinha and Lewandowski officially join, Ancelotti already understand the situation that would occur in the rival between the two clubs. Although Madrid have not been involved much in transfer rumors this season but I believe Carlo Ancelotti is preparing something for Madrid, it's hard to believe they haven't done anything behind Barcelona's rapid development. But on the other hand I have a thought, Madrid's achievements last season satisfied the coach and maybe that's one of the reasons they haven't made too many changes to the line-up because Ancelotti still believes in his current squad.