1. FC Nürnberg is facing a significant loss as captain Fabio Gruber transfers to Mainz 05. The 23-year-old center-back, who has played for Nurnberg since early 2025, has made 41 appearances in the 2. Bundesliga during that time. Gruber, born in Augsburg to a Peruvian mother, made his debut for the Peruvian national team in November 2025. Mainz 05 officially announced the transfer on Friday, with no details regarding the contract disclosed. Sporting director Niko Bungert praised Gruber as a young, skillful defender with leadership qualities. This transfer marks an important step for both clubs, as Nurnberg will now need to find a new captain while Mainz aims to strengthen its defense.