Question: In their 72nd season this NBA team aquired an American professional basketball player who was named NBA Rookie of the Year in what year?

<P0-S0> The 2017–18 Boston Celtics season will be the 72nd season of the franchise in the National Basketball Association (NBA). <P0-S1>  They originally acquired the #1 pick of the NBA draft due to a previous trade involving the Brooklyn Nets, only to then trade the #1 pick of the NBA draft to the Philidelphia 76ers in exchange for two different draft picks. <P0-S2>  They also acquired Gordon Hayward in free agency on July 7 and Kyrie Irving via trade on August 22, 2017 in exchange for rookie Ante Žižić, Jae Crowder, star point guard Isaiah Thomas, the Brooklyn Nets' completely unprotected first round pick in the 2018 NBA draft, and later adding a 2020 second round pick originally from the Miami Heat eight days later. <P0-S3>  The Celtics will play the first game of the regular season on October 17, 2017 against the Cleveland Cavaliers, Irving's former team, and retire the number 34 of former small forward Paul Pierce on February 11, 2018 against the Cavs. <SEP> <P1-S0>  He was named NBA Rookie of the Year after being selected by the Cleveland Cavaliers with the first overall pick in the 2011 NBA draft. <P1-S1>  A four-time NBA All-Star, Irving was selected to the All-NBA Third Team in 2015. <P1-S2>  He won an NBA Championship with the Cavaliers in 2016. <P1-S3> Kyrie Andrew Irving ( , born March 23, 1992) is an American professional basketball player for the Boston Celtics of the National Basketball Association (NBA). <SEP> <P2-S0> Ralph Lee Sampson Jr. (born July 7, 1960) is an American retired basketball player. <P2-S1>  A 7-foot-4 phenom, three-time College Player of the Year, and first selection in the 1983 NBA draft, Sampson brought heavy expectations with him to the National Basketball Association (NBA). <P2-S2>  The NBA Rookie of the Year, Sampson averaged 20.7 points and 10.9 rebounds for his first three seasons with the Houston Rockets before injuries began to take their toll. <P2-S3>  Three knee surgeries later he retired as a four-time All-Star, an NBA Rookie of the Year, and an NBA All-Star Game MVP (). <P2-S4>  One of his many career highlights was a buzzer-beating shot to dethrone the Los Angeles Lakers as Western Conference champions in 1986, derailing their hopes for coveted back-to-back NBA titles, and sending the Rockets to their second NBA Finals in the team's history. <SEP> <P3-S0> The 2000–01 NBA season was the 76ers 52nd season in the National Basketball Association, and 38th season in Philadelphia. <P3-S1>  Allen Iverson had his best season in 2001—he led his team to win their first ten games, he started and won All-Star MVP honors at the All Star Game. <P3-S2>  The Sixers also posted a 56–26 record, which was best in the Eastern Conference that season. <P3-S3>  It was the 76ers' best regular season record since 1984–85. <P3-S4>  Iverson averaged a then-career high 31.1 points, winning his second NBA scoring title in the process. <P3-S5>  He also won the NBA steals title at 2.5 per game. <P3-S6>  Iverson was named NBA Most Valuable Player for his accomplishments, beating Tim Duncan and Shaquille O'Neal by a wide margin. <P3-S7>  In addition, coach Larry Brown was named NBA Coach of the Year, Dikembe Mutombo (who was acquired from the Atlanta Hawks) won his fourth NBA Defensive Player of the Year Award, and Aaron McKie won the NBA Sixth Man of the Year Award.