Carlos impressed Old Trafford scouts in January while captaining Brazil's under-20 team at the South American championships in Argentina.

　　Officials from the English Premier League club have already made contact with Carlos' Brazilian club Corinthians about a possible deal in the next transfer window, local media reported.

　　The center-back is currently on a season-long loan to Brazilian Serie C side Oeste de Itapolis, where Corinthians are hoping to fast-track his development.

　　Manchester United manager Alex Ferguson is currently looking to bolster the heart of his defense, which is led by injury-prone veterans Rio Ferdinand and Nemanja Vidic.

　　The Red Devils already have two Brazilians in their squad - right-back Rafael and midfielder Anderson.