So no Kyrie and no Hayward
PG: Rozier, Smart
SG: Jaylen,
SF: Tatum
PF: Horford, Morris
C: Baynes, Theis
I am assuming a quality backup SG/SF is brought in to even out the rotation with Hayward no longer in the role. That looks a good balanced team to me. Yabu, Robert Williams, Wannamaker as third stringers.
I think that team would be playing at around a 48-52 win clip over the course of a season.
It would be a bit ugly to watch at times because of the lack of playmaking on the perimeter but a scrappy bunch that is difficult to play against.