OKLAHOMA CITY (AP) — The Oklahoma City Thunder bolstered their frontcourt during the NBA draft on Wednesday night, acquiring Serbian forward Aleksej Pokusevski in a trade with Minnesota. The Timberwolves selected Pokusevski with the 17th pick, but a person with knowledge of the negotiations said they had agreed to send the choice to Oklahoma City in exchange for the 25th and 28th overall selections and point guard Ricky Rubio. The person confirmed the deal to The Associated Press on condition of anonymity because the trade had not yet been announced. Deals involving players can’t be finalized until free agency officially begins on Sunday for salary cap purposes. Pokusevski, 18, is listed at 6-foot-11 and 215 pounds. He represented Serbia at the 2018 FIBA U-17 World Championship and the 2019 FIBA U-18 European Championship. He played for Olympiacos' second-division team in Greece last season and averaged 10.8 points and 7.9 rebounds per game. It has been a busy month for the Thunder. Last week, they promoted their former D-League coach, Mark Daigneault, to head coach. On Sunday, it was reported that the Thunder agreed to send guard Dennis Schroder to the Los Angeles Lakers for Danny Green and the pick that became the 28th selection. On Monday, the Thunder sent All-Star guard Chris Paul and Abdel Nader to Phoenix for Kelly Oubre Jr., Rubio, Ty Jerome, Jalen Lecque and a protected 2022 first-round pick. Hours before the draft, it was reported that the Thunder will send Green and Terrance Ferguson to Philadelphia for Al Horford, a future first-round pick and a second-round pick in Wednesday's draft. Oklahoma City's rebuild was expected to start a year earlier, but the Thunder surprised the league by reaching the playoffs and pushing Houston to seven games in the first round. But after the season ended, coach Billy Donovan left and landed with the Chicago Bulls, and the dominoes began falling from there. ___ AP Sports Writer Dave Campbell contributed to this report. ___ Follow Cliff Brunt on Twitter at https://twitter.com/CliffBruntAP. ___ More AP NBA: https://apnews.com/NBA and https://twitter.com/AP_Sports.