sentences:  He joined Barcelona the next season for a then world record fee and won the 1997 Ballon d'Or, making him the youngest Ballon d'Or winner, as well as the 1997 FIFA World Player of the Year.In 1997, Inter Milan broke the world record fee to sign Ronaldo, making him only the second player, after Diego Maradona, to break the world transfer record twice.By age 23, Ronaldo had scored over 200 goals for club and country, however after a series of knee injuries and recuperation he was inactive for almost three years.