Former UConn star Kemba Walker is headed to his third NBA team. The Boston Celtics are sending Walker, a first-round pick in this summer's NBA draft and a second-rounder in 2025 to Oklahoma City. The deal returns Al Horford to Boston, where he played three seasons, along with fellow center Moses Brown. The Celtics also get a 2023 second-round draft pick. ESPN's Adrian Wojnarowski broke the news Friday morning. Walker, 31, spent his first eight NBA seasons in Charlotte and was a three-time all-star point guard. He was an all-star in his first year in Boston, too, in 2019-20, the first season of a four-year contract worth just under $141 million, but knee issues hampered him this season and limited him to 43 regular-season games and only three of the five playoff games against Brooklyn. It's 10 years since he helped the Huskies to the 2011 national championship, winning the Big East tournament, then sweeping to a victory over Butler in the final. Horford, 35, played three seasons for Boston before signing with Philadelphia in 2019. The Sixers traded the five-time all-star to the Thunder in November, and he played 28 games for Oklahoma City. Brown, 21, played his rookie year for Portland and signed with Oklahoma City for the past season. The deal also gives Oklahoma City a strong UConn flavor. The Thunder are coached by UConn graduate Mark Daigneault, who worked as a student manager under Jim Calhoun from 2003 to 2007.