[2] Germán returned to the Estadio Ramón de Carranza in summer 2007, initially being assigned to the reserves in the Tercera División but moving to the first team in June 2010.
[11] In 2018–19, he contributed 38 matches and one goal as they returned to La Liga after a two-year absence, and subsequently agreed to an extension until 30 June 2021.
[12] Germán's maiden appearance in the competition took place on 17 August 2019, when he played the entire 4–4 draw at Villarreal CF.
[14] Germán played 13 games in the 2020–21 edition of the UEFA Europa League, and his side reached the quarter-finals in their first-ever participation in Europe.
[15] On 4 August 2022, free agent Germán joined second-tier Racing de Santander on a two-year contract.