What is the nationality of the soccer player who was the head coach of the under-21 football team that has been playing since 1976?
Denmark national under-21 football team The Denmark national under-21 football team has played since 1976 and is controlled by the Danish Football Association. Before 1976, the age limit was 23 years.
Ricardo Carvalho Ricardo Alberto Silveira de Carvalho, (] ; born 18 May 1978) is a Portuguese professional footballer who plays as a centre back for Chinese club Shanghai SIPG and the Portugal national team.