The Red Sox have reportedly made efforts to deal Jackie Bradley Jr. and have failed at least at this point in time. The issue with any trade would be a replacement, but either Andrew Benintendi or Mookie Betts could comfortably move to center field. There is another option and that is International League batting champion, Rusney Castillo.
The most prominent negative is a significant number: $11,773,142 that represents the 2019 salary for Castillo. In 2020 that increases by approximately $2.5 MM. If the Red Sox place Castillo on the roster his salary immediately becomes part of the luxury tax misery that is facing the Red Sox.