Per Major League Soccer and club policy, the terms of the acquisition will not be disclosed.
Adu signed a professional contract at the age of 14 and was selected by D.C. United as the number one overall pick in the 2004 MLS SuperDraft. After making his professional debut against the San Jose Earthquakes on April 3 as the youngest player on a major U.S. pro team in more than 115 years, Adu was a member of Peter Nowak's 2004 MLS Cup championship squad.
The US international finished his first season with five goals and three assists after notching his first professional goal on April 17 in a 3-2 loss to the MetroStars, thus becoming the youngest goal scorer in MLS history. Named an MLS All-Star in 2004 and 2006, Adu scored 11 goals and added 17 assists in 87 appearances with the Black-and-Red.