Xabi and Wirtz have a strong relationship, having worked together for three years at Bayer. This connection makes it possible that Wirtz might choose to follow his coach to Real Madrid, according to sources.

Bayer is demanding a high price of €150 million to sell Wirtz, which has already led Manchester City to drop out of the running. However, Real Madrid is willing to pay a significant amount, knowing that Wirtz values his working relationship with Xabi.

Xabi's influence on Wirtz was evident last season, as the attacking midfielder scored 18 goals and provided 19 assists in 49 games. He also finished 12th in the Ballon d'Or rankings.