I'm sure it will be Barca with Lamine extraordinary performance, as for Real Madrid, They have a bunch of stars but I feel they aren't gonna coorperate and they wont be good chemistry among them.
Why do you say that at this time? Are you not sure that Ancelotti's coaching at Real Madrid is generally still able to reduce every player's ego? Because I don't think Real Madrid will be bad because there are more stars in their squad next season, although I also won't deny that Barcelona can be quite good with players like Yamal still in their squad next season. Barcelona fans are just hoping for the best for Barcelona next season because the coach is different, while Real Madrid will still be handled by a coach who is experienced enough so it is very unlikely to be worse than last season.
Do not make conclusions too quickly. Lamine Yamal has indeed appeared quite impressive at Euro 2024 but that doesn't mean that he will be able to carry Barcelona alone. In fact, there is one biggest challenge for Barcelona next season. With a new coach, it's not easy to get good chemistry. Meanwhile, Real Madrid, they haven't changed much. Rather than Mbappe, I am even more worried about the hole left by Kroos because what Real Madrid has achieved so far does not take away from his contributions.
A player alone cannot take a team to winning trophies, it takes every member of the club including those who are also off the pitch, it's a combined effort if not Harry Kane would have won as much trophies. Yamal is a great player, having saw his relevance at the Euro then unarguably Barcelona could make good use of him even better to maximize their chances but what will be his effect against Madrid or Manchester City likely in the Champions League.
Modric is still there to do what Kroos does but it won't be effective because the physical strength is no longer there and he would not be given as much playing time. Valverde will be the centre of attention, let's see what his performance will be.
Actually, we should not underestimate Lamine Yamal. The opponents he plays are defenders who play for the best teams in the world. If he is so effective against them, he can be effective against City or any other team. I think Leo Messi also had this impact at the age of 17. We now see in him a player who has the potential to be one of the best players in the world. Barcelona are very lucky to have him.