It certainly won't be easy. His knees are a red flag. (It's interesting that when he originally got to Boston he had the reputation of seldom missing games.)
There has to be a playoff team out there, that made an early exit that feels they're one scorer away.
I would be fine with him being traded for a few serviceable players to bolster our G League bench.
Many say we don't have interest to dump his salary in a trade. But what if NYK think he is a viable big 3 with Randle and Barett. Then trade him for Mitchell Robinson and NYK 2022 first RP (protected like J Green picks trade like 10 to 6). Get rid of Thompson and Edwards with 2d picks.
Then with the 20M cap space sign either Lowry or Dragic for a 1 or 2 years rental. Create TPE with Fournier to use it later on Barnes or Grant OR evenBertans (like for 2/3 first + one young buck, saying Pritchard as I prefer Nesmith and Langford potential). Use the rest of TPE(s) and MLE to sign 2 correct supporting cast players (Dunn,Bradley,Ntilikina for G and Olynyk-McGee-WCS for Big)
A team of : Lowry (or Dragic)-Brown-Tatum-Barnes-Timelord Smart-Bradley-Nesmith-Olynyk-Robinson Madar-Ntilikina-Langford-Parker-G Will would be a deep team with a lot of defensive materials surounding the jays. And I would even be sad not seeing Brad coaching this team, as I really think for his style of coaching he lacked of material this year, not even counting the injuries and covids.