The Braves have about 67.5 guaranteed. If they pick up O'Day that would put them at 70m.
If they offered everyone arbitration, the ceiling there would probably be about 30m, but that includes picking up options on guys like Camargo, Folty, Duvall, Jackson. Those 4 are probably more than half of the Braves arbitration expenses between them.
I think the Braves are likely to start free agency with somewhere between 85-95m in payroll.
I'm not sure anyone really understands what the economics of next season look like. The economics of this season were pretty austere as pretty much no one took on much money or bad deals at the deadline.
If mid and small market teams are bleeding players the beneficiaries are still likely to be big market clubs, but the Braves are somewhat well positioned to benefit if they have a reasonable payroll limit.
"Reasonable" is the operative term that players and fans are going to whine about though.
No fans in the stands (as well as the resulting revenue streams like parking, merchandising, food and beer sales, etc.) while the players required full prorated salaries is a huge loss. The players aren't SHARING in anything here - they're being paid in full for every game that is played in 2020. The players were shortsighted and selfish - they wanted to get paid as if things were "normal", and they weren't.
The ~ $150 million payroll was set because the projected "normal" revenues would have supported that. The players took their normal piece of the pie while ownership lost its *ss on gate revenue, merchandising revenue, parking revenue, and food/beer sales. On top of that, the revenues The Battery was expected to generate tanked.
A 2021 payroll around $120 million would be a gift. If you're at $95 million with your figures and you bring Ozuna back you have less than $10 million to spend. Happy shopping!