The Portland Trail Blazers, Sacramento Kings, Minnesota Timberwolves and Cleveland Cavaliers are also interested in Ben Simmons.
On Wednesday, the Timberwolves announced that they have parted ways with Rosas just prior to the start of the 2021-22 NBA season.
Kevin Garnett played six seasons with the Celtics from 2007-2013 where he helped the team win the Championship in 2008.
Former baseball player Alex Rodriguez and his business partner are reportedly in discussion to purchase Timberwolves