Sixers should draft Simmons and call it an offseason. We have no idea what Embiid will bring, how he fits with Noel or anyone else on the team. You also have to take into account it's been over 2 years since he's played real ball, he didn't even play much at Kansas, and his basketball experience prior to THAT is limited. It is very, VERY risky to trade Okafor, your only proven player, in hope for Embiid's recovery, and whoever you draft at 3 if you're going to the Celtics.
To trade to Boston is madness anyway. What happens in three years when we're meeting them in the playoffs and have to play AGAINST Jah. Dude is gonna be a monster by then. It just doesn't make any sense. There's no rush. Draft and put the guys on the floor. Between Saric, Simmons, and Embiid, we have a lot of fun stuff to look forward to and a hell of a lot more evaluating to do.