How's this?
Eovaldi (+$6M) & Chavis to Seattle for Dee Gordon
(It's not about acquiring Gordon; it's about saving big money. Gordon has one year left at $13.5M with a $1M buyout for '21. His luxury tax hit is just $10M. Eovaldi is owed $17M for 3 more years. We pay $2M a year, making it $15M. We save $5M on the tax budget in 2020 then $15M for 2021 and 2022.) Gordon plays 2B in 2020 and then we free up more money to keep Betts or sign other free agents.
Price (+$6M) & Velazquez to San Diego for Wil Myers
(Again, this is not about acquiring Myers; it's about saving even bigger money. Myers is owed $22.5M x 3 years, but his luxury tax hit is just $13.8M x 3. Price is owed $32M x 3, but we'd pay $2M a year x 3, making it $30M for SD. His luxury tax cost is $31M-$2M=29. We'd save over $15M on the tax budget. Myers would play 1B or maybe some corner OF.)
Tax budget savings:
2020: $20M
2021: $35M
2022: $35M
If we trade JBJ, we'd have plenty of money to sign some FA pitchers this winter and next.