Xabi Alonso may not have much experience in major competitions, but his success at Leverkusen didn't come easily because it required extensive preparation. The Bundesliga is also quite competitive, and leading Leverkusen to the Bundesliga title was a remarkable effort. I'm confident Xabi Alonso will be able to lead Real Madrid back to the top, but he needs to consider the number of players he needs in defense.
If we look at Real Madrid's weaknesses we can say that the defense is a crucial position, and without a thorough evaluation, it will become a problem. Injuries to players can have a significant impact so Real Madrid needs to consider other options, such as recruiting additional players for that position.
Recruiting additional player for defense position? Madrid have many defense player now by two signed Trent Arnold and Dean Huijsen not really need for defense additional player. If all defense players not injury Madrid have enough defense player and back up by Militao or David Alaba have return back from injury, Dani Carvajal have returned from injury and make debut last match against PSG, he ready for Madrid next season exactly in Champion League.
Champion League match first qualifying round have played last middle week and the second leg match will play at 15th July, still need playing several matches later for any team have start from playoff round for qualifying to final round. Still the same with last season format and UEFA Champion League adopted phase league format.