Rumor has it, Ainge is gunning to get Marc Gasol. If that happens... they may have the final piece that they're looking for to get to the finals.
The only way to make it work without giving up Tatum, Brown, and our core players to match contracts would be Crowder, Bradley, and Smart for Gasol. Memphis might even want a pick. Lottery picks are out of the question. Marc is gonna be 33 so if you trade for him you better be ready to win the title now.
Depth Chart would be
C Gasol, Zizic
PF Horford, Theis, maybe Yabusele if they allow rookie exception I think.
SF Hayward, Tatum, Semi
SG Brown
PG Isaiah, Rozier
This is a good team, but I don't know if it's good enough to win the title in the near future. It's a mix of good veterans but also very young guys. This roster is also before any mid level/bi-annual/veteran minimum exception players have signed.