Looking at the players who are in Madrid current attack after Mbappe came then it can be said that Madrid have a very perfect attacking line in destroying every of their opponents next season, so I think it's time for Perez also to prioritize other positions for them to strengthen at the moment, Kross who will leave Madrid next season will of course leave a big hole in their midfield, So indeed without a qualified midfield, of course, the attacking line will also not be able to have a good enough performance in a team, because indeed the team that prioritizes high attacks will centered from their midfield so far.
In addition to the midfield, of course they must also be able to improve the defense at this time, because last season was an experience of how Madrid was too easily exploited by other teams that also have a very good attacking line, to be able to become a perfect team, of course Perez must be able to strengthen Madrid in every existing line, so that of course it will most likely make Madrid an undefead team in the league later, Perez current ambition, of course, is in accordance with ability and desire from ancelotti to see the glory era of Los Galaticos repeated.
Toni Kroos' departure will not have a big impact because Real Madrid has been preparing for it since several seasons ago, we can see several potential young players in Real Madrid's midfield so I don't think the team doesn't need to bring in other players for the midfield.
Overall the players in the Real Madrid squad are quite capable now especially with the arrival of the best striker in the world (Mbappe) of course the team will be much stronger next season so they don't have an urgent need to bring in other players maybe they will just make several transfers to maintain the stability of the team's performance if player rotation occurs.
However, if we talk about whether or not Real Madrid will be able to defend the CL title next season, I think we don't just have to look at the squad in the team because a team's performance cannot be predicted with certainty and defending the CL title is a very difficult thing.
Madrid will have a sharper front line next season with the recruitment of Mbappe, which is clearly better than last season where they did not have a suitable replacement after Benzema departure to Al Ittihad. But regarding Kroos and the role he left behind, I don't think Ancelotti found it in another player. Even though we know that Madrid has a number of quality players in midfield, their quality is still very far from Kroos. With Kroos, a match becomes simpler, a difficult victory can be made easier through his assists, we certainly still remember his pass to Vinicius in the match against Bayern Munchen.
Madrid have got Mbappe who is considered one of the best strikers at the moment, but Madrid will not find a player like Kroos in the transfer window. That's why Ancelotti said that if Kroos changes his mind, the door to return is always open for him. Overall, Ancelotti will encourage other midfielders to be like Kroos, who can create creative space for attackers to execute into goals. However, after seeing Ancelotti able to lead Madrid to win the Champions League and La Liga without a capable number 9 player, it feels like they will be able to retain the trophy even though Kroos has decided to retire.