The real problem for Real Madrid is their midfield woes. As we saw last year, Kroos' absence significantly impacted Real Madrid. To avoid a similar problem this year, I believe they need to make a transfer in this area. Vinicius, Mbappé, Rodrygo, and Bellingham are all effective attacking players for this team. However, they lack a master of control in midfield. A transfer in that area would raise the team's level. However, they probably haven't figured out who to bring in for this position. I'm sure manager Xabi Alonso has a plan.
Toni Kroos absence made a huge blow to Real Madrid in their midfield control which also exposed the weakness of their defensive line. Players like Kroos aren't easy to replace and I don't think Xabi Alonso can quickly get a perfect replacement to that position except he just gets lucky. And now with Modric departure to AC Milan it all makes real Madrid's situation for a superb performance against Barcelona next season yet uncertain.