Ronaldo de Assis Moreira, commonly known as Ronaldinho Gaúcho or simply Ronaldinho, is a Brazilian former professional footballer who played as an attacking midfielder or winger. Widely regarded as one of the greatest players of all time, he won two FIFA World Player of the Year awards and a Ballon d'Or. He is the only player ever to have won a World Cup, a Copa América, a Confederations Cup, a Champions League, a Copa Libertadores and a Ballon d'Or. A global icon of the sport, Ronaldinho was renowned for his technical skills, creativity, dribbling ability and accuracy from free-kicks, his use of tricks, feints, no-look passes and overhead kicks, as well as his ability to score and create goals, all prominent characteristics of his early-age background playing futsal. He is known by the nickname "O Bruxo".

The 2006–07 season was an overall unsuccessful time for Futbol Club Barcelona in almost all competitions. Although the team managed to snatch the Supercopa de España, and finish second in the domestic league, a lot more was expected from the team that had been European champion. It started with the team's defeat at the final of the 2006 FIFA Club World Cup Final near the end of 2006, and the team did worse in 2007. This was the first of two bad seasons for the club, which led to great changes in the roster and direction. This also marks both the last season FC Barcelona wore a jersey without a sponsor and the first time a sponsor appeared in it: UNICEF.