KANSAS CITY, Kan. (AP) — Sporting Kansas City signed homegrown players Grayson Barber, Ozzie Cisneros and Brooks Thompson on Wednesday as the Major League Soccer club continues to get younger by developing players from within its system. The 20-year-old Barber played for Sporting KC's academy from 2015-17 before a standout career at Clemson, where the midfielder had 13 goals and 18 assist in 49 appearances.