Mateus Galiano da Costa (born 19 June 1984), known simply as Mateus, is an Angolan professional footballer who plays as a forward for Portuguese club U.D. Leiria. He spent practically all of his career in Portugal, recording 280 games and 51 goals in the Primeira Liga. He represented four teams in the division, mainly Nacional and Boavista. Mateus made his debut for Angola in 2006 and earned 68 caps. He was selected for the 2006 World Cup and four Africa Cup of Nations tournaments. Club career Early years and Caso Mateus Mateus was born in Luanda. After started playing professionally for modest Portuguese teams (he had a stint with Sporting CP, but never moved past their reserves), he signed in January 2006 with Gil Vicente F.C. of the Primeira Liga. He scored in his debut on 5 February, in a 5–0 home win against Vitória de Setúbal. However, Mateus was at the centre of a judicial controversy that erupted in Portuguese football, known as Caso Mateus (Mateus Affair), after a supposedly illegal registration by the Barcelos club. Following a lengthy judicial battle between Gil and C.F. Os Belenenses, the former were relegated. After an uneventful season with Gil Vicente in the second division, greatly delayed by the legal consequences, Mateus joined Boavista F.C. for the 2007–08 campaign. His new team was also eventually relegated, due to irregularities. Nacional In 2008–09, Mateus moved to Madeira's C.D. Nacional, being a regular in their attack as they qualified for the UEFA Europa League. In the same season, he played six games and scored four goals as they reached the semi-finals of the Taça de Portugal, including one in each leg of a 5–2 aggregate elimination by F.C. Paços de Ferreira. Mateus continued to be play frequently for the better part of the following years, notably netting nine goals in 24 matches in the 2011–12 season. On 7 April 2012, he scored twice in a 4–2 away victory over Funchal rivals C.S. Marítimo. Later career On 17 November 2013, Mateus moved to his country's league for the first time, signing for C.D. Primeiro de Agosto for the new year. In December 2015, he agreed a move back to Portugal's top flight, joining F.C. Arouca for the remainder of the campaign with the option of one more. Mateus returned to Boavista on 23 June 2017, signing a one-year deal a decade after first joining the