Eichhorn made his debut in the 2025-26 season and quickly became a key player for Hertha Berlin, making 17 appearances in the 2. Bundesliga. He also impressed in other competitions, making 20 appearances and scoring two goals in 1,358 minutes of action.

As one of Germany's top midfield prospects, Eichhorn's decision to join Leverkusen is seen as a significant boost for the club. Meanwhile, Liverpool will need to focus on strengthening their first team with new manager Andoni Iraola set to make changes in the coming months.