Just a little more on the Aaron Gordon trade front here. An NBA executive, watching from afar when it comes to the Gordon sweepstakes, says he’s not the only name the Celtics are chasing. If he was, the deal would be done. Executing deals with Boston can be tricky. Offers are often made out of Beantown for players not currently on the Celtics’ roster (meaning a third team has to get involved), which can frustrate colleagues looking to make a big deal.
https://theathletic.com/2469290/2021/03/23/nba-trade-deadline-week-2021-live-blog-updates-news-and-observations-from-the-athletics-insiders/?source=twitterhq
3-way for Barnes? 
Or what about a 3 team trade ?
Orlando : Kemba + Bos 2 nd
New Orleans : Smart + Bos 2021 1st pick (or/and eventually one of Langford/nesmith/PP)
Boston : Ball + Fournier + Gordon
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_ we have a real organisatior at PG who fit with jays timeline in Ball
_ we have a scorer 6th men with Fournier
_ we have our stretch 4 with Gordon
_ we change the pace of the game and that give a PO rotation : Ball-Brown-Tatum-Gordon-TL with still Fournier/PP/Theis/ a vet wing traded for
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_ Fournier may be a rent as we have to pay probably 20-25M Ball next year.
_ we eat our TE... But whatever we have to eat it at one time or another
_ Loosing Smart. I don't think he is cooked and will show up again in PO
If something like that is possible I would do it.
PS I understood it isn't aa 3 team trade just 2 separate trades
not digging that. seems like if we're giving up Kemba, Smart, a first and a second, we should be able to come away with at least an all-star player that's a true 3rd top player to put with the J's. none of Ball, Gordon or Fournier are on that level.
To continue that thought
... Locking ourselves into a 50-55 win regular season team that isn't good enough to beat any of the top teams in the playoffs. A 2nd round and out ball club.
You speak like all this player will still be at this level. Not sure Kemba is or will ever be an all star level guy ever. Not sure if he fits good with this team. I love Smart but his BBIQ is much discutable and some signs seem to show he isn't that good on this team. Are you sure next year when/if KAT or Beal become available, Kemba or expiring Smart would have better value than Ball and Gordon ? Not sure.
Ball is 23, in progress, 198cm, good defensor, we lack of a real creative gard. He may progress with this role in this environment. Fournier may be a valuable 6th men, Gordon, I don't like much, but he will balance our team. We replace clearly Tatum at 3 and Brown at 2.
All this players seems more complementary to Jays and add a little depth, that we lack. We still can trade later with them or other young assets who may progress and become valuable (PP, Timelord, Nesmith).But maybe we don't need a big 3, just a big 2 with a complemntary talented, defensive team. The role would be more clear. The youth may turn ourself to our real window, maybe as soon as next year. Maybe I overestimate Ball, Tatum and Brown. Time will tell.