Question: Before the start of the 2014–15 Indiana Pacers season, storm clouds gathered around which American professional basketball player for the Oklahoma City Thunder of the National Basketball Association (NBA)?

Context articles: Mitch McGary
2014–15 Indiana Pacers season
List of Oklahoma City Thunder head coaches
Paul George
Lance Stephenson
List of Oklahoma City Thunder seasons
Professional Basketball Club
Ryan Reid
Daniel Hamilton (basketball)
2017–18 Oklahoma City Thunder season

Mitchell Neil William "Mitch" McGary (born June 6, 1992) is an American professional basketball player who last played for the Oklahoma City Thunder of the National Basketball Association (NBA).
 A native of Chesterton, Indiana, McGary declared for the NBA draft after completing his sophomore season for the 2013–14 Michigan Wolverines men's basketball team.
 He was drafted 21st overall by the Thunder in the 2014 NBA draft.
The 2014–15 Indiana Pacers season was Indiana's 48th season as a franchise and 39th season in the NBA.
 The Pacers finished fourth in Central Division and ninth in Eastern Conference.
 The Pacers missed the playoffs for the first time since 2010 after a 56–26 mark from the previous season, following two-straight Eastern Conference Finals appearances.
 Before the start of the season, storm clouds gathered around All-Star Paul George, who seriously injured his leg during a Team USA scrimmage.
 The injury required immediate surgery.
 George was originally to be ruled out for the entire season, but as the season progressed, he was talking about returning.
 He also announced before the season that he would be wearing number 13 and earned the nickname 'PG-13' (his initials and new jersey number).
 As the season winded down and after months of rehabilitation, George made his regular season debut on April 5 in a home game against the Miami Heat.
 He finished the game with 13 points off the bench and received a standing ovation.
 His season ended, however, on April 16 when he strained his left calf in a game against Memphis.
 George was only able to play six games this season.
The Oklahoma City Thunder is an American professional basketball franchise based in Oklahoma City, Oklahoma.
 It plays in the Northwest Division of the Western Conference in the National Basketball Association (NBA).
 It was known as the Seattle SuperSonics from 1967 to 2008.
 The team plays its home games at the Chesapeake Energy Arena.
 As of October 2008, the Thunder is currently owned by Professional Basketball Club LLC and coached by Billy Donovan, with Sam Presti as its general manager.
 The team was formed in 1967.
 After spending 41 seasons in Seattle, Washington, the SuperSonics moved to Oklahoma City.
 Owner Clay Bennett, who purchased the team in 2006, sought to get public funding for a new arena in Seattle, or a major renovation of the KeyArena in 2007.
 After failing to do so, he decided to move the team to Oklahoma City.
 Seattle sued Bennett's group to enforce the lease that required the team to stay until 2010.
 The two sides reached a $45 million settlement to pay off the team's lease with KeyArena in July 2008.
Paul George (born May 2, 1990) is an American professional basketball player for the Oklahoma City Thunder of the National Basketball Association (NBA).
 He is a four-time NBA All-Star and has been named three times to the All-NBA Team and NBA All-Defensive Team.
Lance Stephenson Jr. (born September 5, 1990) is an American professional basketball player for the Indiana Pacers of the National Basketball Association (NBA).
 He attended Lincoln High School in the Coney Island section of Brooklyn.
 Stephenson won city basketball championships in all four years of high school, and is New York State's all-time leading scorer in high school basketball.
 He was named Mr. New York Basketball after his senior year and appeared in the 2009 McDonald's All-American Game.
 He was drafted with the 40th overall pick in the 2010 NBA draft by the Indiana Pacers and played for the franchise until signing with the Charlotte Hornets in 2014.
 After three years splitting time with the Hornets, Los Angeles Clippers, Memphis Grizzlies, New Orleans Pelicans and Minnesota Timberwolves, Stephenson returned to the Pacers in March 2017.
The Oklahoma City Thunder are a professional basketball team based in Oklahoma City, Oklahoma.
 They play in the National Basketball Association (NBA) and are a member of the NBA Western Conference's Northwest Division.
 The Thunder were founded in 1967 as the Seattle SuperSonics as one of two franchises that joined the NBA in the 1967–68 season.
 The SuperSonics moved to Oklahoma City after the 2007–08 season.
 The move from Seattle to Oklahoma City marks only the second time that a current franchise won a title in one city and moved some time afterwards to another city (the 2nd are the Atlanta Hawks who left St. Louis after winning the 1958 title there).
The Professional Basketball Club LLC is an investment group headed by Clay Bennett that owns the National Basketball Association (NBA)'s Oklahoma City Thunder franchise (formerly the Seattle SuperSonics) and the Thunder's NBA Development League affiliate Oklahoma City Blue.
 The group also owned the Women's National Basketball Association (WNBA)'s Seattle Storm franchise from 2006 to 2008.
 The PBC then sold the Storm to local Seattle owners, before moving the SuperSonics to Oklahoma City.
Ryan Reid (born October 30, 1986) is an American-born Jamaican professional basketball player who plays for Shimane Susanoo Magic of the B.League.
 Reid played college basketball with the Florida State Seminoles.
 After four years in college, he was drafted by the Indiana Pacers with the 57th pick in the 2010 NBA Draft.
 After the draft, his draft rights were immediately traded to the Oklahoma City Thunder.
 However, the Thunder did not sign him to a contract and Reid went on to play with in the Tulsa 66ers, the NBA Development League (NBA D-League) affiliate of the Thunder.
 He played for the 66ers for one season before he was signed by the Thunder for the 2011–12 season.
Daniel Hamilton (born August 8, 1995) is an American basketball player for the Oklahoma City Thunder of the National Basketball Association (NBA), on a two-way contract with the Thunder's NBA G League affiliate, the Oklahoma City Blue.
 He played college basketball for the Connecticut Huskies, and earned second-team all-conference honors in the American Athletic Conference (AAC) as a sophomore.
 After he decided to forgo his remaining two years of college eligibility, Hamilton was selected in the second round of the 2016 NBA draft by the Denver Nuggets.
 The draft right later was traded to the Oklahoma City Thunder.
The 2017–18 Oklahoma City Thunder season will be the 10th season of the franchise in Oklahoma City and the 52nd in the National Basketball Association (NBA).
 This season was headlined by the acquisitions of All-Stars Paul George and Carmelo Anthony in trades with the Indiana Pacers and New York Knicks respectively.
 It also highlighted one of their first ever (original) All-Stars in Russell Westbrook signing a five-year extension worth $205 million.