Question: The 2004-05 season saw Futbol Club Barcelona restructure, following the retirement of a Spanish former professional footballer, and a current manager, who was born on May 8th in what year?

full_context: Document 1: 2000–01 FC Barcelona season: Barcelona lost their supremacy of Spanish football, finishing just fourth in La Liga, despite having bought Marc Overmars and Emmanuel Petit in total of £54m transfer fee in the summer of 2000. While Barcelona was controversially sold Luís Figo to arch rivals Real Madrid in July 2000. New coach Lorenzo Serra Ferrer was not improved well and put under increasing pressure, and when Barcelona narrowly missed out on Champions League qualification in the summer, he was sacked in late April 2001. Barcelona dramatically sealed Champions League 3rd qualifying spot in the season finale, thanks to Rivaldo bicycle kick goal against Valencia.
Document 2: 2004–05 FC Barcelona season: The 2004-05 season saw Fútbol Club Barcelona end their six-year wait for the La Liga title, having not won the league or, indeed, any trophy since the 1998–99 season and thus La Liga trophy returned in Barcelona's trophy room. Having finished second in La Liga the previous season, Barcelona once again competed in the UEFA Champions League as well as the Copa del Rey. The squad was restructured significantly following the retirement of key players Luis Enrique and Marc Overmars, as well as the return of Edgar Davids to Juventus and first team regulars Patrick Kluivert and Phillip Cocu moving onto new clubs. Ronaldinho's and new signing Samuel Eto'o's performances won them places in FIFPro's XI of 2004–05. Ronaldinho was later named FIFA World Player of the Year for 2005 for the second time in succession and with the highest points total ever; Eto'o came third. This season was also notable for the debut of Lionel Messi.
Document 3: Luis Suárez (footballer, born 1935): Luis Suárez Miramontes (] ; born 2 May 1935), also known by the diminutive Luisito, is a Spanish former footballer and manager. He played as a midfielder for Deportivo de La Coruña, CD España Industrial, FC Barcelona, Inter Milan, Sampdoria and Spain. Suárez is regarded as one of Spain's greatest players; he was noted for his elegant, fluid, graceful style of play. Nicknamed "El Arquitecto" (The Architect) he was noted for his perceptive passing and explosive shot and in 1960 he became the only Spanish-born player to be voted Ballon d'Or. In 1964 he helped Spain win the European Championship. Suarez originally achieved prominence as a creative inside forward or attacking midfielder for the great Barcelona team of the 1950s before he joined Inter Milan where he reached his prime as deep lying playmaker for the legendary "Grande Inter" team of the 1960s. He played a pivotal role in the success Herrera's Inter Milan side, and was one of the primary creative forces in the squad, due to his ball skills, vision, and passing range. He retired as a player in 1973, after three seasons at Sampdoria.
Document 4: José Luis Mendilibar: José Luis Mendilibar Etxebarria (born 14 March 1961) is a Spanish retired footballer who played as a midfielder, and is the current manager of SD Eibar.
Document 5: 2009–10 FC Barcelona season: In 2009–10, Futbol Club Barcelona started the new season with the prospect of winning six major competitions in the 2009–2010 season. They contested for the Supercopa de España, UEFA Super Cup, FIFA Club World Cup, Copa del Rey, La Liga, and the UEFA Champions League. During the summer transfer window, the club swapped their top league goal scorer during the treble season, Samuel Eto'o to Italy's Inter Milan in exchange for Zlatan Ibrahimović, along with €48 million, bringing the total to €69 million.
Document 6: Andrés Iniesta: Andrés Iniesta Luján (] ; born 11 May 1984) is a Spanish professional footballer who plays as a central midfielder for FC Barcelona and the Spain national team. He serves as the captain for Barcelona.
Document 7: Pep Guardiola: Josep "Pep" Guardiola Sala (] ; born 18 January 1971) is a Spanish professional football coach and former player who is the current manager of Manchester City.
Document 8: Luis Enrique (footballer): Luis Enrique Martínez García (] ; born 8 May 1970), known as Luis Enrique, is a Spanish former professional footballer, and a current manager.
Document 9: Ernesto Valverde: Ernesto Valverde Tejedor (] ; born 9 February 1964) is a Spanish former footballer who played as a forward, and is the current manager of FC Barcelona.
Document 10: 2008–09 FC Barcelona season: In 2008–09, Futbol Club Barcelona started a new era with a new manager, former player and Barcelona Atlètic coach Pep Guardiola, who led the team to the first treble in Spanish football history. After selling off high-profiled players such as Deco and Ronaldinho, Barcelona played scintillating football throughout the season, winning the Copa del Rey, La Liga and the UEFA Champions League. This Barcelona squad is considered as one of the best in history.
Document 11: 2005–06 FC Barcelona season: The 2005–06 season was Futbol Club Barcelona's 107th season in existence and 77th consecutive season in the top flight of Spanish football, La Liga. It was manager Frank Rijkaard's third season in charge of the club, a season in which he managed to successfully retain the La Liga title, as well as winning the UEFA Champions League and Spanish Super Cup. The squad was largely unchanged from the previous season, with only two players – Santiago Ezquerro and Mark van Bommel – joining the club. Gerard left on a free transfer during the summer.
Document 12: 2014–15 FC Barcelona season: The 2014–15 season was Futbol Club Barcelona's 115th in existence and the club's 84th consecutive season in the top flight of Spanish football. It was one of the most successful seasons in the club's history as they clinched the Treble by winning La Liga, Copa del Rey and the UEFA Champions League. By doing so, the Catalans became the first European team to twice win the domestic double as well as the highest continental tournament, after winning their first treble in the 2008–09 season. Barcelona's success was due to a large extent to their formidable forward trio composed of Lionel Messi, Neymar and summer signing Luis Suárez, who scored an unprecedented total of 122 goals in all competitions to become the trio with most goals in Spanish football history.
Document 13: 2007–08 FC Barcelona season: Though it did not produce silverware, Futbol Club Barcelona's 2007–08 season would mark a period of change within the club, having many firsts and lasts. Most importantly, this would be Ronaldinho's last season with the club, being displaced by the coming of Arsenal legend Thierry Henry. This season also marked the breakthrough of young talent Bojan into the first team, as well as the emergence of Lionel Messi as one of the team's key players. On the other hand, this would be Lilian Thuram's last season as a professional footballer, as well as Gianluca Zambrotta's last with the club.
Document 14: Vicente del Bosque: Vicente del Bosque González, 1st Marquis of Del Bosque (] ; born 23 December 1950) is a retired footballer born in Salamanca, Region of León, who most recently managed the Spanish national football team. After taking over from Luis Aragonés – who had led Spain to European success in the 2008 European Championship – Del Bosque went on to lead the national team to win their first-ever World Cup in 2010, and then to retain their European Championship in 2012. Del Bosque coached Real Madrid from 1999 to 2003, which was the most successful period in the club's modern era. Del Bosque is regarded as one of the greatest and most successful managers of all time; he is to date the only football manager to have won the Champions League, the European Championship, and the World Cup, as well as the Intercontinental Cup. In January 2017, del Bosque was named among the 10 greatest coaches since the foundation of UEFA in 1954.
Document 15: 1998–99 FC Barcelona season: During the 1998–99 FC Barcelona season, the club once again retained the La Liga title, but eliminated by Valencia in the round of 16 of Copa del Rey. Barcelona enjoyed a great season with their new signings Ronald de Boer, Patrick Kluivert, Frank de Boer, Mauricio Pellegrino, Boudewijn Zenden and Phillip Cocu. Barcelona's league start was slower in early season but Barcelona turnaround to secure La Liga in late-May, but Barcelona crashed out of the UEFA Champions League, following an another lackluster performance in the First Group Phase.
ground_truth: 1970