They are fine for now. They can experiment with this for a few months.
PG - Simmons
SG - Bayless/Henderson/Stauskas/Rodriguez
SF - Saric/Convington
PF - Okafor
C - Embiid
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PF/C - Noel
Plenty of minutes for Okafor, Noel and Embiid to all get 30+
Simmons surely is the starting 4. He is never, ever going to be able to guard 1s.
Also, you have Okafor listed here as a power forward. That is a recipe for disaster, as he will be predictably awful trying to guard more mobile players out on the floor. But, in any case, his coach played him at center virtually every minute last season, and that is not likely to change.
Also, you didn't list Carl Landry, who is signed through 2017 on a good contract, a power forward who has transformed himself into a very nice stretch four; he played rotation minutes last season, and that's not likely to disappear .
Also, Saric, at 6'10", is not likely to be able to take on small forwards in the NBA. A good rule of thumb here is the old tweener rule: "If you have to ask, he's a four."
Not surprisingly, given the logjam at power forward, they let Christian Wood depart, despite a very promising season.
They'd be wise to see if Okafor improved from his rookie to sophomore season (as typically happens with 20 year olds) and whether he plays better alongside Embiid who supposedly has range. They'd also be wise to see if Okafor flourishes with Simmons passing the ball. Lot of stuff they can play around with. There's not enough data yet. They need to make educated decisions here.
So I wouldn't count on Okafor being traded for a role player. That'd make no sense whatsoever.
Looks like a buyer's market to me. It does look like he's got a great body, ample evidence of a work ethic, and some exceptional skills.
They could especially use a point guard who can play off the ball.