Memphis Grizzlies Executive Vice President of Basketball Operations Zach Kleiman says both Jaren Jackson Jr. and Justise Winslow won't be ready for the start of the 2020-21 season, via Mark Giannotto of the Commercial Appeal.

The 2020-21 campaign will begin on Dec. 22.

Jaren Jackson Jr. is recovering from a meniscus tear in his left knee, while Justise Winslow is rehabbing a hip injury.

Winslow has yet to make his Grizzlies debut after being acquired from the Miami Heat in the Andre Iguodala deal prior to the 2020 trade deadline.

Jackson Jr. appeared in 57 games for the Grizzlies in 2019-20. He averaged 17.4 points, 4.6 rebounds and 1.4 assists while shooting 46.9 percent from the field, 39.4 percent from beyond the arc and 74.7 percent from the free-throw line. He's the second-best player on the team behind only 2020 Rookie of the Year Ja Morant.

With the Heat, Winslow compiled averages of 9.0 points, 5.4 boards and 2.7 assists in 241 games. He has yet to live up to his potential after being selected with the 10th overall pick in the 2015 draft out of Duke.

The Grizzlies are hoping his nagging hip injury isn't a long-term ailment.

Memphis shocked the basketball world in 2019-20 by almost making the playoffs at Walt Disney World despite franchise cornerstones Mike Conley and Marc Gasol no longer being on the team. The Grizzlies were one win away from reaching the playoffs. They lost to the Portland Trail Blazers in the NBA's first-ever play-in game down in Orlando, Florida.

While the Grizzlies have a bright future with Morant and Jackson Jr. leading the way, Memphis is privately hoping injuries don't ruin something special.