If I'm Devers' agent, I just keep pointing at Anthony Rendon, whose contract will pay him $38,571,428 for each of the next four years for his ages 33 through 36...
... a slight overpay according to BIV (Baseball INSANE Values), but Rendon got paid -- starting at age 30 -- because of these 162-game averages for ages 26-29: 29 HRs, 112 RBI, 104 runs.
Devers' 162-game averages the past four years through age 25: 34 HRs, 114 RBI, 110 runs. Does anyone really think he won't command an AAV of $30M?