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?
Sentence (from "2017–18 Boston Celtics season"): 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.
Relevant evidence: Yes