Best I could come up with is a 3 team trade
Boston - Siakam, Beverley
Los Angeles - Walker, Thompson
Toronto - Smart, Morris, Zubac, Nesmith, Bos 21, Bos 22, Bos 24 (top 4)
Not sure that is good enough a package, but I don't think much else makes a lot of sense for any of the teams.
good enough? amazed you didn't offer up Tatum's first born, Deuce, to pile on that overpayment.
Siakam was really exposed in last year's playoffs. he's basically a third banana on a good team like Kemba and he'd be behind Tatum and Brown in the wing depth chart.
I agree that the full 3-way is too much. But the Boston - Clipps part is a good start. Say we traded Walker and Thompson to Clipps for Morris, Beverley, and Zubac. That part seems to work.
Then we have to figure out what to send to Toronto to get Siakam. Zubac would be of interest to them and maybe they take expiring Beverley to help bolster salary but then we do need to add to this to interest Toronto. Smart may need to be in this mix and maybe this year's pick.
I think if we go much more than that, it starts to not work for us. Summary:
Boston: Morris, Siakam
Clipps: Walker, Thompson
Rapts: Zubac, Beverley, Smart, Bos 2021 1st
Even in this scenario, we end up with two pretty big contracts each with 3 years remaining but I think it makes the team better, gives us some much needed size. And the hope is that the new scenery allows Siakam to thrive and become a top end PF.