On 30 October 2018, Peña was called up to the main squad for the first leg of round of 32 tie with Cultural Leonesa in the Copa del Rey as a backup to Jasper Cillessen,[7] being an unused substitute in the 1–0 away win.[8] He also appeared on the bench for some occasions during the season as Cillessen and starter Marc-André ter Stegen were out injured.[9][10]