While I think Horford and Davis can play together, Al is getting old and doesn't have much left in the tank. In a perfect world, he would be the salary going to New Orleans in the trade. With his salary the trade could be enlarged to include Holiday (who I don't think New Orleans would really want to keep going forward)
So next summer I'd be good with something like this
Horford, Tatum, Smart, Yabu, and the 1st's
for
Davis, Holiday
So post trade for next year with the main rotation (maybe Rozier is brought back, maybe not)
PG - Irving, Holiday
SG - Holiday, Brown
SF - Hayward, Brown, Semi
PF - Morris, Davis, Theis
C - Davis, Baynes, Williams
I like that team even without Rozier. Still have MLE to add some vets to the team.