From what I read Story's shoulder is bad enough that he can no longer play on the left side of the infield. Hernandez is currently the best SS option unless the rush Mayer to the bigs. Devers will need to be a 1B man in the not-too-distant future. So, if the Red Sox want to move forward with Kepler and Arraez then Arraez would need to man third and Verdugo or Kepler in Center with Hernandez/Mayer at SS. If I'm the Red Sox, I'm not likely to see this is a good solution short or long term.