Question: In what year did the highest paid professional sports player go to Manchester United?

full_context: Document 1: Cristiano Ronaldo: Cristiano Ronaldo dos Santos Aveiro GOIH, ComM (Portuguese pronunciation: (kɾiʃ'tjɐnu ʁuˈnaɫdu); born 5 February 1985) is a Portuguese professional footballer who plays as a forward for Spanish club Real Madrid and the Portugal national team. Often considered the best player in the world and widely regarded as one of the greatest of all time, Ronaldo has four FIFA Ballon d'Or awards, the most for a European player, and is the first player in history to win four European Golden Shoes. He has won 24 trophies in his career, including five league titles, four UEFA Champions League titles and one UEFA European Championship. A prolific goalscorer, Ronaldo holds the records for most official goals scored in the top five European leagues (372), the UEFA Champions League (107) and the UEFA European Championship (29), as well as the most goals scored in a UEFA Champions League season (17). He has scored more than 600 senior career goals for club and country.
Document 2: Highest-paid NBA players by season: 2018 -- 2019 Player Salary Team Stephen Curry $37,457,154 Golden State Warriors Russell Westbrook $35,665,000 Oklahoma City Thunder Chris Paul $35,654,150 Houston Rockets LeBron James $35,654,150 Los Angeles Lakers Blake Griffin $31,873,932 Detroit Pistons Gordon Hayward $31,214,295 Boston Celtics Kyle Lowry $31,000,000 Toronto Raptors James Harden $30,570,000 Houston Rockets Paul George $30,560,700 Oklahoma City Thunder Mike Conley Jr. $30,521,115 Memphis Grizzlies 2017 -- 2018 Player Salary Team Stephen Curry $34,682,550 Golden State Warriors LeBron James $33,285,709 Cleveland Cavaliers Paul Millsap $30,769,231 Denver Nuggets Gordon Hayward $29,727,900 Boston Celtics Blake Griffin $29,512,900 Los Angeles Clippers / Detroit Pistons Kyle Lowry $28,903,704 Toronto Raptors Mike Conley Jr. $28,530,608 Memphis Grizzlies Russell Westbrook $28,299,399 Oklahoma City Thunder James Harden $28,299,399 Houston Rockets DeMar DeRozan $27,739,975 Toronto Raptors
Document 3: Highest-paid NBA players by season: Player Salary Team LeBron James $30,963,450 Cleveland Cavaliers Al Horford $26,540,100 Boston Celtics DeMar DeRozan $26,540,100 Toronto Raptors James Harden $26,540,100 Houston Rockets Kevin Durant $26,540,100 Golden State Warriors Russell Westbrook $26,540,100 Oklahoma City Thunder Mike Conley Jr. $26,540,100 Memphis Grizzlies Dirk Nowitzki $25,000,000 Dallas Mavericks Carmelo Anthony $24,559,380 New York Knicks Damian Lillard $24,328,425 Portland Trail Blazers
Document 4: Highest-paid NBA players by season: Player Salary Team LeBron James $30,963,450 Cleveland Cavaliers Al Horford $26,540,100 Boston Celtics DeMar DeRozan $26,540,100 Toronto Raptors James Harden $26,540,100 Houston Rockets Kevin Durant $26,540,100 Golden State Warriors Russell Westbrook $26,540,100 Oklahoma City Thunder Mike Conley, Jr. $26,540,100 Memphis Grizzlies Dirk Nowitzki $25,000,000 Dallas Mavericks Carmelo Anthony $24,559,380 New York Knicks Damian Lillard $24,328,425 Portland Trail Blazers
Document 5: Forbes' list of the world's highest-paid athletes: Rank Name Sport Nation Total Salary / Winnings Endorsements Cristiano Ronaldo Association football Portugal $93 million $58 million $35 million LeBron James Basketball United States $86.2 million $31.2 million $55 million Lionel Messi Association football Argentina $80 million $53 million $27 million Roger Federer Tennis Switzerland $64 million $6 million $58 million 5 Kevin Durant Basketball United States $60.6 million $26.6 million $34 million 6 Andrew Luck American football United States $50 million $47 million $3 million 6 Rory McIlroy Golf Northern Ireland $50 million $16 million $34 million 8 Stephen Curry Basketball United States $47.3 million $12.3 million $35 million 9 James Harden Basketball United States $46.6 million $26.6 million $20 million 10 Lewis Hamilton Auto racing England $46 million $38 million $8 million
Document 6: Cristiano Ronaldo: Cristiano Ronaldo dos Santos Aveiro GOIH ComM (European Portuguese: (kɾiʃˈtjɐnu ʁoˈnaɫdu); born 5 February 1985) is a Portuguese professional footballer who plays as a forward for Spanish club Real Madrid and the Portugal national team. Often considered the best player in the world and widely regarded as one of the greatest of all time, Ronaldo has a record - tying five Ballon d'Or awards, the most for a European player, and is the first player to win four European Golden Shoes. He has won 26 trophies in his career, including five league titles, five UEFA Champions League titles and one UEFA European Championship. A prolific goalscorer, Ronaldo holds the records for most official goals scored in Europe's top - five leagues (395), the UEFA Champions League (120), the UEFA European Championship (9), as well as those for most assists in the UEFA Champions League (34) and the UEFA European Championship (6). He has scored over 670 senior career goals for club and country.
Document 7: Highest-paid NBA players by season: Player Salary Team Stephen Curry $34,682,550 Golden State Warriors LeBron James $33,285,709 Cleveland Cavaliers Paul Millsap $30,769,231 Denver Nuggets Gordon Hayward $29,727,900 Boston Celtics Blake Griffin $29,512,900 Los Angeles Clippers / Detroit Pistons Kyle Lowry $28,903,704 Toronto Raptors Mike Conley Jr. $28,530,608 Memphis Grizzlies Russell Westbrook $28,299,399 Oklahoma City Thunder James Harden $28,299,399 Houston Rockets DeMar DeRozan $27,739,975 Toronto Raptors
Document 8: Cristiano Ronaldo: Cristiano Ronaldo GOIH, ComM Ronaldo at the 2017 FIFA Confederations Cup Full name Cristiano Ronaldo dos Santos Aveiro Date of birth (1985 - 02 - 05) 5 February 1985 (age 32) Place of birth Funchal, Madeira, Portugal Height 1.87 m (6 ft 2 in) Playing position Forward Club information Current team Real Madrid Number 7 Youth career 1992 -- 1995 Andorinha 1995 -- 1997 Nacional 1997 -- 2002 Sporting CP Senior career * Years Team Apps (Gls) 2002 -- 2003 Sporting CP B (0) 2002 -- 2003 Sporting CP 25 (3) 2003 -- 2009 Manchester United 196 (84) 2009 -- Real Madrid 277 (289) National team Portugal U15 9 (7) 2001 -- 2002 Portugal U17 7 (5) 2003 Portugal U20 5 (1) 2002 -- 2003 Portugal U21 10 (3) Portugal U23 (2) 2003 -- Portugal 147 (79) Honours (show) Representing Portugal UEFA European Championship Winner 2016 France Runner - up 2004 Portugal 2012 Poland & Ukraine FIFA Confederations Cup 2017 Russia * Senior club appearances and goals counted for the domestic league only and correct as of 15: 00, 23 December 2017 (UTC). ‡ National team caps and goals correct as of 22: 40, 10 October 2017 (UTC)
Document 9: Cristiano Ronaldo: Cristiano Ronaldo GOIH, ComM Ronaldo at the 2017 FIFA Confederations Cup Full name Cristiano Ronaldo dos Santos Aveiro Date of birth (1985 - 02 - 05) 5 February 1985 (age 32) Place of birth Funchal, Madeira, Portugal Height 1.85 m (6 ft 1 in) Playing position Forward Club information Current team Real Madrid Number 7 Youth career 1992 -- 1995 Andorinha 1995 -- 1997 Nacional 1997 -- 2002 Sporting CP Senior career * Years Team Apps (Gls) 2002 -- 2003 Sporting CP B (0) 2002 -- 2003 Sporting CP 25 (3) 2003 -- 2009 Manchester United 196 (84) 2009 -- Real Madrid 270 (286) National team 2001 Portugal U15 9 (7) 2001 -- 2002 Portugal U17 7 (5) 2003 Portugal U20 5 (1) 2002 -- 2003 Portugal U21 10 (3) Portugal U23 (2) 2003 -- Portugal 147 (79) Honours (show) Representing Portugal UEFA European Championship Winner 2016 France Runner - up 2004 Portugal 2012 Poland & Ukraine FIFA Confederations Cup 2017 Russia * Senior club appearances and goals counted for the domestic league only and correct as of 23: 00, 22 October 2017 (UTC). ‡ National team caps and goals correct as of 22: 40, 10 October 2017 (UTC)
Document 10: Sports Illustrated: Athlete Sport Number of covers Michael Jordan Basketball 50 Muhammad Ali Boxing 40 LeBron James Basketball 25 Tiger Woods Golf 24 Magic Johnson Basketball 23 Kareem Abdul - Jabbar Basketball 22 Tom Brady Football 20
Document 11: Highest-paid NBA players by season: Player Salary Team Stephen Curry $34,682,550 Golden State Warriors LeBron James $33,285,709 Cleveland Cavaliers Paul Millsap $31,269,231 Denver Nuggets Gordon Hayward $29,727,900 Boston Celtics Blake Griffin $29,512,900 Los Angeles Clippers Kyle Lowry $28,703,704 Toronto Raptors Russell Westbrook $28,530,608 Oklahoma City Thunder Mike Conley, Jr. $28,530,608 Memphis Grizzlies James Harden $28,299,399 Houston Rockets DeMar DeRozan $27,739,975 Toronto Raptors
Document 12: Cristiano Ronaldo: Cristiano Ronaldo dos Santos Aveiro GOIH ComM (European Portuguese: [kɾiʃˈtjɐnu ʁoˈnaɫdu]; born 5 February 1985) is a Portuguese professional footballer who plays as a forward for Italian club Juventus and captains the Portugal national team. Often considered the best player in the world and  widely regarded as one of the greatest players of all time, Ronaldo has a record-tying five Ballon d'Or awards, the most for a European player, and is the first player to win four European Golden Shoes. He has won 29 trophies in his career, including six league titles, five UEFA Champions League's, one UEFA European Championship, and one UEFA Nations League. A prolific goalscorer, Ronaldo holds the records for most official goals scored in the UEFA Champions League (126), the UEFA European Championship (9), as well as those for most assists in the UEFA Champions League (34) and the UEFA European Championship (6). He has scored over 700 senior career goals for club and country.
Document 13: Forbes' list of the world's highest-paid athletes: Rank Name Sport Nation Total Salary / Winnings Endorsements Cristiano Ronaldo Football Portugal $93 million $58 million $35 million LeBron James Basketball United States $86.2 million $31.2 million $55 million Lionel Messi Football Argentina $80 million $53 million $27 million Roger Federer Tennis Switzerland $64 million $6 million $58 million 5 Kevin Durant Basketball United States $60.6 million $26.6 million $34 million 6 Andrew Luck American football United States $50 million $47 million $3 million 6 Rory McIlroy Golf Northern Ireland $50 million $16 million $34 million 8 Stephen Curry Basketball United States $47.3 million $12.3 million $35 million 9 James Harden Basketball United States $46.6 million $26.6 million $20 million 10 Lewis Hamilton Auto racing England $46 million $38 million $8 million
Document 14: Cristiano Ronaldo: Cristiano Ronaldo Cristiano Ronaldo with Portugal at the 2018 FIFA World Cup Full name Cristiano Ronaldo dos Santos Aveiro Date of birth (1985 - 02 - 05) 5 February 1985 (age 33) Place of birth Funchal, Madeira, Portugal Height 1.85 m (6 ft 1 in) Playing position Forward Club information Current team Juventus Number 7 Youth career 1992 -- 1995 Andorinha 1995 -- 1997 Nacional 1997 -- 2002 Sporting CP Senior career * Years Team Apps (Gls) 2002 -- 2003 Sporting CP B (0) 2002 -- 2003 Sporting CP 25 (3) 2003 -- 2009 Manchester United 196 (84) 2009 -- 2018 Real Madrid 292 (311) 2018 -- Juventus 0 (0) National team Portugal U15 9 (7) 2001 -- 2002 Portugal U17 7 (5) 2003 Portugal U20 5 (1) 2002 -- 2003 Portugal U21 10 (3) Portugal U23 (2) 2003 -- Portugal 154 (85) Honours (show) Men's football Representing Portugal UEFA European Championship 2004 Portugal 2012 Poland & Ukraine 2016 France FIFA Confederations Cup 2017 Russia * Senior club appearances and goals counted for the domestic league only and correct as of 19 May 2018 ‡ National team caps and goals correct as of 30 June 2018
Document 15: Cristiano Ronaldo: Cristiano Ronaldo GOIH, ComM Ronaldo at the 2017 FIFA Confederations Cup Full name Cristiano Ronaldo dos Santos Aveiro Date of birth (1985 - 02 - 05) 5 February 1985 (age 32) Place of birth Funchal, Madeira, Portugal Height 1.85 m (6 ft 1 in) Playing position Forward Club information Current team Real Madrid Number 7 Youth career 1992 -- 1995 Andorinha 1995 -- 1997 Nacional 1997 -- 2002 Sporting CP Senior career * Years Team Apps (Gls) 2002 -- 2003 Sporting CP B (0) 2002 -- 2003 Sporting CP 25 (3) 2003 -- 2009 Manchester United 196 (84) 2009 -- Real Madrid 265 (285) National team 2001 Portugal U15 9 (7) 2001 -- 2002 Portugal U17 7 (5) 2003 Portugal U20 5 (1) 2002 -- 2003 Portugal U21 10 (3) Portugal U23 (2) 2003 -- Portugal 145 (78) Honours (show) Representing Portugal UEFA European Championship Winner 2016 France Runner - up 2004 Portugal 2012 Poland & Ukraine FIFA Confederations Cup 2017 Russia * Senior club appearances and goals counted for the domestic league only and correct as of 23: 00, 3 June 2017 (UTC). ‡ National team caps and goals correct as of 22: 40, 3 September 2017 (UTC)
ground_truth: 2003
sub_queries: who is the highest paid professional sports player Answer: Cristiano Ronaldo
when did Cristiano Ronaldo go to manchester united Answer: 2003