Real Madrid will never take the risk of being dependent on a specific player. Madrid is strong as a team. And that is why we see Madrid playing well consistently in all platform . Madrid competes for the title in both La Liga and Champions League. If they depend on a specific player, it is very difficult to continue to perform well consistently on each platform. at the same time it is very risky. Xabi Alonso is an experienced coach. Even at Leverkusen we saw that Alonso was not dependent on a specific player. He did not create his match strategy. And he will do the same in Madrid.
This is why they consistently win titles in both La Liga and Champions League. They have many talented players and smart plan that does not rely on single superstar. If team depends too much on one person injury or bad day for that player can ruin everything. Madrid however has always shown it can bounce back even without key players proving their team first approach works. Xabi Alonso who built strong team at Bayer Leverkusen without depending on one star fits this philosophy perfectly. He would likely bring same team focused strategy to Madrid ensuring they keep performing at high level in every competition.