The talent will be deeper on this year's team than last, at the very least - I don't know about the rotation.
We lose Yeboah and Carter at the F/C spots, and pick up Omoruyi, Mag, Palmquist, and Reiber. Swapping in 4 for 2 adds talent, and makes the competition for minutes much stiffer.
Looking at the Center spot....
Last year, the minutes breakdown was 23.6 Johnson, 12.4 Carter, 5.5 Doucoure.... which shifted to 24.6 Johnson, 13.2 Carter, 4.3 Doucoure over the last 18 games.
This year, we return Johnson and Doucoure, but add Omoruyi and Reiber into the mix. I'd expect Omoruyi to shift into Carter's minutes right out of the gate, which could expand up to 15+ if he's as good as advertised. That would be all 40 min at the 5, with the third center seeing spot minutes when there's foul trouble. Which brings us to Reiber and Doucoure... it might end up being a scenario where Doucoure continues as that pressure release valve to give Reiber a year to RS, or it might end up with Reiber being that 3rd center and Doucoure becoming more of a practice player.
Looking at Yeboah's spot....
Mag and Palmquist come in fighting for Yeboah's 23.8 min (25.6 over the last 18 games).... but they'll also be jockeying with Harper, McConnell, and Mathis each trying to expand their own minutes at the 3/4 spots.