I hope he is able to come before the starting of the season.
I can tell you right now he will not be able to. The season begins at the end of October (So a little under 3 months until the first games), and his injury was no 3 month injury. I suspect he will be out for at least half of this upcoming season if not all of it. To put it in perspective Kevin Ware returned to playing after his gruesome injury after about 8 months.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs