Arena plans to retain Williams , who played for him at the University of Virginia and D.C. United , as his assistant , and plans to coach the Red Bulls for the first time when the team plays Barcelona of Spain in an international friendly on Aug. 12 at Giants Stadium in East Rutherford , N.J . Arena was born in Brooklyn and grew up in Franklin Square , N.Y. , playing lacrosse and soccer at H. Frank Carey High School on Long Island .