Irving's days of playing 80 games in a season are probably over, so that will cap his fantasy value in a big way next year.
He will have the procedure on Saturday "to remove two screws implanted in his patella from an injury suffered during the 2015 NBA Finals." The Celtics have made it clear that they will prioritize Irving's long-term health, and Celtics GM Danny Ainge recently admitted that another surgery was in his future.
If Irving returns from a two-game absence, the Celtics won't need to rely on Terry Rozier, Jayson Tatum and Al Horford nearly as much. This is similar to the operation that Andre Drummond had before the season and it's one of the reasons why the big man had a bounce-back year.
He only logged 58 seconds in Game 6 and is averaging only 1.2 points a game in the five games he's played this series.
While waiting for another update, we have to assume that this procedure means he'll be sidelined longer than just a week.