"After consultation with multiple back specialists, it has been determined that the best course of action for Ben's long-term health is for him to undergo surgery," the Nets said in a statement.
The procedure is expected to sideline Simmons for three-to-four months, sources told ESPN's Adrian Wojnarowski, but he reportedly should be cleared in time for training camp.
After missing the entire second half of the season with the Nets following his deadline trade from the Philadelphia 76ers, Simmons looked likely to make his long-awaited team debut in Game 4 of Brooklyn's first-round series against the Boston Celtics. However, he reportedly woke up that day with soreness in his back again, prompting the team to shut him down as the Nets were swept in four games.
Brooklyn coaches and players were apparently caught off guard by Simmons sitting out for what turned out to be their final game of the season. Some within the team reportedly hoped for the three-time All-Star to push his body in the must-win contest.