Ben Simmons has been diagnosed with a nerve impingement (a pinched nerve) in his lower back and isn’t expected to return to play for an extended period of time, league sources have told ESPN.

Simmons is undergoing treatment and will be reevaluated in two weeks, but there is doubt he will be ready to return to play in that two week timeframe, sources said.

The Sixers and Simmons plan to be cautious with the guard’s back injury, and the organization is preparing to play an extended period of time without him, sources said.

There is no concrete timeline on a return, but team doctors are hopeful that treatment can help the pinched nerve over time.