Xabier Alonso Olano is a Spanish professional football manager and former player who is currently the head coach of Bundesliga club Bayer Leverkusen. Regarded as one of the best midfielders of his generation, he is also considered one of the best young managers in the world.

Bayer 04 Leverkusen, officially known as Bayer 04 Leverkusen Fußball GmbH and commonly known as Bayer Leverkusen or simply Leverkusen, is a professional football club based in Leverkusen, North Rhine-Westphalia, Germany. The club competes in the Bundesliga, the top tier of German football, and plays its home matches at the BayArena.