There is no problem if the contract extension is true because fans will be happy if Toni Kroos stays for another month, because the public also wants him to stay with the results he has achieved at Real Madrid, but if not, that's no problem for Real Madrid fans. because of that they know that Tono Kroos's decision has indeed been made to leave Real Madrid. Regarding Mbappe, nothing is impossible when the European Cup matches end. Anything can happen because Mbappe also wants to play for Real Madrid. Even if he doesn't win, Real Madrid still has players. who is quite reliable in the attack line and has future players beyond Mbappe.
Toni Kross is a legend at Real Madrid and he closed the season by winning two prestigious trophies as a final farewell because he had chosen to retire. The fans of course lost one of the most influential players in the Real Madrid team because Toni Kroos presence on the field was always able to make a big contribution to the team in achieving victory. But with his decision to retire, of course it is a decision he has thought about and he will enjoy his retirement with lots of time with his family.
Apart from that, Real Madrid is dominated by young players and perhaps only Luca Modric is one of the remaining senior players in the team. Yes, we'll see whether Luca Modric will stay with Real Madrid because currently discussions about the contract are still continuing and hopefully Real Madrid will give Luca Modric time for the next season.