Australian basketball prodigy Ben Simmons is facing decision day.

The 20-year-old Simmons is likely to learn tomorrow if he will be cleared to play for the Philadelphia 76ers this NBA season.

Simmons will undergo a CT scan on the right foot he fractured during the 76ers' pre-season training camp in September and the team's doctors will then decide the timeline for his return.

"I feel like tomorrow, at some point, we're all going to be able to lay out a more genuine plan for him," 76ers coach Brett Brown says.

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"I feel like we're going to be good to go with some greater news and a more advanced detail of his plans after this scan."

It has been a frustrating start for the Melbourne-born Simmons' professional basketball career, after being selected by the 76ers as the No.1 pick in the 2016 NBA Draft.

Brown, a former Boomers Olympic and NBL coach, wants to see Simmons on the court, but there is speculation he could sit out the rest of the season to ensure his foot heals.

"I personally would like to see him play this season," Brown said. "I don't backpedal from that and I think my comments are really very much influenced by his reciprocal desire to play this year, which we all respect.

"Everybody's got clandestine conspiracy theories on why he might not want to play.

"I know in my heart and speaking to him, he wants to get on a court and play basketball again.

"I hope he can do that to, but if he can't we will deal with it."