New signings Arnau Puigmal and Largie Ramazani are named.
Goals from Gribbin and Scott earned United a friendly draw at Moor Lane against National League opposition.
Man United finished 3rd in Group A of the Gordon Jago Super Group at the Dallas Cup.
Goals from Josh Bohui, Matthew Olosunde and Callum Gribbin secured the win for United in Texas.
Manchester United will take a squad of 17 to the United States' oldest youth football tournament, the Dallas Cup.