I'm not so sure I want to take Chen back in a Yellich trade even if it would mean keeping some prospects. One of the biggest things Yelich brings is his affordability. He's owed $7 million in 2018, $9.8 million in 2019, $12.5 million in 2020, $14 million in 2021, and has a $15 million team option for 2022. That's controlling him from age 26 through age 30 at a fairly reasonable price.
But now add Chen to that. Chen is owed $17.3 million in 2018, 2019, and 2020 (he has a $16 million vesting option based on him pitching 180 innings in 2020 which almost certainly wont happen). There's a good bet that if we take Chen in return, we get zero contribution from him.
If we get nothing from Chen, all of a sudden the true cost of Yelich is $24.3 million in 2018, $27.1 million in 2019, and $29.8 million in 2020. Even if Chen comes off the books after 2020 and Yelich's price for 2021 and 2022 drops back to just his contract, that's still a ton of money.
You get a good picture of the difference if you average out over the years of Yellich's contract.
Without Chen- Average of $11.66 million per year
With Chen- Average of $22.04 million per year
Yelich is an excellent baseball player, but he's not a superstar. He's a guy who will hit .280 with an .800-.850 OPS and 20 HRs.
Then there's the fact that he would be moving from center in Atlanta. When Acuna gets here there's a good chance that Yelich is playing left. That waters down what he does even more.
So here's the question, if Yelich was a free agent and wanted a 5 year deal at $22.04 million per year, would you sign him to play left? I wouldn't. Add in the fact that we wouldn't just be allocating a huge portion of our payroll to getting Yelich, we'd also still have to give up a fair amount of talent in return and I have to say no thanks.
First of all I'd defeinitely sign a 26 year old Yelich for 5/110 if he were a free agent.
I think you're looking at Chen's contract wrong. There is a lot of deffered money in there. It would cost us $52M over the next 4 years not counting the 2021 option. I also think he's good for at least 3 WAR over the next 3 seasons so I'd put the sunk cost at about $30M