Indeed, when the club is on the rise, the players will definitely be targeted by big clubs and it will be quite a difficult choice for the players whether they want to stay or leave the club and move to a bigger club which is of course more convincing and Leverkusen is at a different level to Real Madrid, unless the players are willing to stay at Leverkusen because of their very high loyalty and solidarity, then Xabi Alonso will be safe because Xabi Alonso does not need to make a major overhaul, only needs to add one or two players to improve their performance next season.
For certain reasons, perhaps the players targeted by other teams will prefer to stay, for example they still want to work together and help Xabi next season, especially when they play in the Champions League. Of course, these players will also be happy considering that they will be playing in a more prestigious competition such as the Champions League, so maybe they will stay at Leverkusen.
Because after all, they can also improve their performance because Xabi has helped them, so they can show their best game. Usually players will be able to play and show their best abilities when they are in the hands of the right coach, and now it can be said that Xabi is the right coach for them.
And also Leverkusen will affect them, I mean if Leverkusen prefers to sell them they also can't do much. But I see that now Leverkusen is giving its players the freedom to make choices.