Xabi Alonso is experienced and knows what he's doing, he doesn't need guidance because he's very equipped with more tangling goals this season. Real Madrid president, Florentino Pérez trust him to deliver a good job. Xabi Alonso is still contemplating on his main starting players for next season. Bringing in new faces would solve the puzzle for Xabi Alonso but on the other hand, he needs to he acquainted and knows specifically what he needs to accomplish next season.
Nobody can guide him on how to do his work in real Madrid because he is not managing the club wrongly even if we said his strategy wasn't how we thought on the club world cup but he is still the good coach we no, for now he is no longer worried on the starting team because he has seen the players he would be using as the season begin, he had practical experience from the entire team which was something that usually educate coaches to no the real deal, what the players he has in mind will do this season is what we don't no yet because this is not the one they just left.
I think otherwise cause if he's seen the players he wants to use ahead of the upcoming season then he won't be requesting that Perez get him more players, he won't be needing more Midfielders but be satisfied with the ones he has already, don't forget he's starting a fresh season with Real Madrid and has not played any league match asides the match in the club world cup so he'll still need more time to pick his starting XI.
Yes, Xabi is a good manager, what he did at Bayer Leverkusen is a prove to check that fact, which tike he'll improve Real Madrid to do better cause that's what Perez signed him for and if he's not able to do that then I trust Perez to sack him and get a better coach but my thought is that he'll succeed at Real Madrid.