Juan (footballer, born 1979) - Wikipedia
Juan Silveira dos Santos (Portuguese pronunciation: [huˈɐ̃ siɫˈvejɾɐ dus ˈsɐ̃tus]; born 1 February 1979 in Rio de Janeiro), commonly known as Juan, is a Brazilian retired footballer who played as a central defender.. Having begun his career with Flamengo, he spent a decade playing in Europe in service of Bayer Leverkusen and Roma before returning to Brazil with Internacional in 2012.