Atlético signs Brazilian forward Matheus Cunha from Hertha

Brazil's Antony embraces teammate Matheus Cunha after he scored his side's opening goal against Spain in the men's soccer final match at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Yokohama, Japan. (AP Photo/Martin Mejia)

Brazil's Matheus Cunha scores his side's opening goal against Spain in the men's soccer final match at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Yokohama, Japan. (AP Photo/Martin Mejia)

Brazil's Matheus Cunha celebrates scoring the opening goal against Spain during the men's final soccer match at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Yokohama, Japan. (AP Photo/Andre Penner)

Brazil's Matheus Cunha (9) celebrates with teammate Antony after scoring his side's opening goal against Spain in the men's soccer final match at the 2020 Summer Olympics, Saturday, Aug. 7, 2021, in Yokohama, Japan. (AP Photo/Martin Mejia)