Question: The current coach of the Los Angeles Clippers was signed as a free agent to the San Antonio Spurs during what season?

Passages:
Glenn Anton "Doc" Rivers (born October 13, 1961) is an American basketball coach and former player.  He is the current head coach for the Los Angeles Clippers.  As an NBA point guard, Rivers was known for his defense. The 2003–04 NBA season was the SuperSonics' 37th season in the National Basketball Association.  During the offseason, the Sonics signed free agent Antonio Daniels.  The Sonics started the season in Tokyo, Japan with a two game series against the Los Angeles Clippers.  The Sonics got off to a 5–1 start, but played around .500 for the first half of the season.  Ray Allen played his first full season as a member of the Sonics after being acquired from the Milwaukee Bucks in a trade last February.  Despite missing the first 25 games due to an ankle injury, he was voted to play in the 2004 NBA All-Star Game.  This was Allen's fourth overall All-Star Game appearance and his first as a member of the Sonics.  However, despite a 7-game winning streak in March, the Sonics lost seven of their final ten games ending the season fifth in the Pacific Division with a 37–45 record, missing the playoffs.  Following the season, Brent Barry signed as a free agent with the San Antonio Spurs. Ozell "Hoppy" Jones (November 20, 1960 – September 7, 2006) was a professional basketball player.  Born in Long Beach, California, he was listed at 6 ft and weighed 235 lbs.  Jones first played collegiate ball with the Wichita State University (1979–1981) and helped the Shockers reach the Elite 8 in his second year.  He later transferred to Cal State Fullerton to play for the Titans in 1982-1984.  He entered the 1984 NBA Draft and was chosen in the fourth round (90th pick overall) by the San Antonio Spurs.  On October 24, 1985, Jones was waived by the Spurs.  He later signed as a free agent with the Los Angeles Clippers on March 31, 1986 but played only three games.  After his stint in the NBA, Jones first played overseas in Italy (1986–1987) then spent the rest of his professional career playing in the CBA for the Cincinnati Slammers (1986–1987), Quad City Thunder (1987–1988), Tulsa Fast Breakers (1989–1990) and Tri-City Chinook (1993–1994).  He also participated in the USBL with two stints for the Miami Tropics in 1987 and 1988.  After retiring, Jones operated a big and tall men's clothing store in Lancaster, California. The 2004–05 NBA season was the SuperSonics' 38th season in the National Basketball Association.  After losing their season opener to the Los Angeles Clippers 114–84 on November 3, the Sonics went on a nine-game winning streak as they won 17 of their first 20 games.  Despite losing eight of their final ten games, the Sonics finished first place in the Northwest Division with a solid 52–30 record, marking their first 50-plus win season since 1998, and first playoff appearance since 2002.  Ray Allen led the team averaging 23.9 points per game as he, and Rashard Lewis were both voted to play in the 2005 NBA All-Star Game in Denver.  In the first round of the playoffs, the Sonics defeated the Sacramento Kings in five games, but would lose in the second round to the eventual champion San Antonio Spurs in six games.  This would be their final playoff appearance as the Sonics.  Following the season, head coach Nate McMillan was fired, and Antonio Daniels signed as a free agent with the Washington Wizards. The 1991–92 NBA season was the Spurs' 16th season in the National Basketball Association, and 25th season as a franchise.  During the offseason, the Spurs acquired Antoine Carr from the Sacramento Kings, then in December signed free agent Vinnie Johnson.  After a 10–3 start to the season, the Spurs struggled with mediocrity holding a 21–17 record in late January, as head coach Larry Brown suddenly stepped down and took a coaching job with the Los Angeles Clippers.  Under replacement Bob Bass, the Spurs would play slightly stronger finishing second in the Midwest Division with a 47–35 record.  David Robinson was selected for the 1992 NBA All-Star Game, made the All-NBA First Team and was named Defensive Player of The Year.  In the first round of the playoffs, the Spurs were swept by the Phoenix Suns in three straight games.  Following the season, Rod Strickland signed as a free agent with the Portland Trail Blazers, Bass was fired as coach and Johnson retired. The 1994–95 NBA season was the Spurs' 19th season in the National Basketball Association, and 28th season as a franchise.  During the offseason, the Spurs hired Bob Hill as head coach, re-acquired Sean Elliott after playing one year with the Detroit Pistons, re-signed Avery Johnson after one season with the Golden State Warriors, and signed free agents Chuck Person and former All-Star Moses Malone.  Early into the season, they signed free agent Doc Rivers, who was released by the New York Knicks. Stephen Jesse Jackson (born April 5, 1978) is an American retired professional basketball player who played 14 seasons in the National Basketball Association with the Brooklyn Nets, Indiana Pacers, Golden State Warriors, Milwaukee Bucks, San Antonio Spurs, and Los Angeles Clippers (NBA).  Jackson won an NBA championship in 2003 as a member of the San Antonio Spurs. Rasual Butler (born May 23, 1979) is an American professional basketball player who last played for the San Antonio Spurs of the National Basketball Association (NBA).  He has previously played for the Miami Heat, New Orleans Hornets, Los Angeles Clippers, Chicago Bulls, Toronto Raptors, Indiana Pacers, Washington Wizards and San Antonio Spurs.  He was born in Philadelphia, and raised in the Point Breeze area of South Philadelphia. The 2014–15 San Antonio Spurs season was the 48th season of the franchise, 39th in the National Basketball Association (NBA) and 42nd in the San Antonio area.  The Spurs were the defending NBA Champions, having defeated the Miami Heat in the 2014 NBA Finals 4 games to 1.  On April 3, 2015 after their victory over the Denver Nuggets they clinched a 50+ win season for the 16th consecutive season.  The Spurs started the season slow and exceeded their previous season of 20 losses, but managed an eleven-game winning streak within the last 12 games and finished 55-27, finishing third in the Southwest on a tie breaker to the Memphis Grizzlies.  The Spurs' season ended with a Game 7 first round loss to the Los Angeles Clippers, after a layup by Chris Paul with 1 second on the clock.  The team hired former WNBA point guard Becky Hammon as an assistant head coach, making her the first full-time female assistant coach in the NBA . The 1999–2000 NBA season was the 30th season of the National Basketball Association in Cleveland, Ohio.  During the offseason, the Cavaliers acquired Lamond Murray from the Los Angeles Clippers.  Under new head coach Randy Wittman, the Cavaliers played around .500 with a 11–9 record in their first 20 games, but then continued to struggle without Zydrunas Ilgauskas, who missed the entire season due to foot injures.  The team finished 6th in the Central Division with a 32–50 record.  Shawn Kemp led the team in scoring, rebounds and blocks, and top draft pick Andre Miller made the All-Rookie First Team.  The Cavaliers also finished the season with the highest amount of defensive 3-second violations, a record that still stands today.  Following the season, Kemp was traded to the Portland Trail Blazers, Bob Sura was traded to the Golden State Warriors, Andrew DeClercq was dealt to the Orlando Magic, and Danny Ferry signed as a free agent with the San Antonio Spurs.

Supporting sentences:
 Early into the season, they signed free agent Doc Rivers, who was released by the New York Knicks.  He is the current head coach for the Los Angeles Clippers.