On December 11, 2006, D.C. United traded Adu and goalkeeper Nick Rimando to Real Salt Lake in exchange for a major allocation, goalkeeper Jay Nolly, and future considerations.
Pada tanggal 11 Desember 2006, DC United diperdagangkan Adu dan kiper Nick Rimando ke Real Salt Lake dalam pertukaran untuk alokasi utama, kiper Jay Nolly, dan pertimbangan masa depan.