 Complete the following phrase:  On 7 December 2019, Mangas made his professional debut in Primeira Liga for Aves, playing the full 90 minutes of a 10 home win against S.C. Braga; he was watched by Atlético Madrid forward and Portugal international João Félix, his long-term teammate at Benfica. He played 20 games as the team form Vila das Aves were 