They appear to be going for it in 2021 as they acquired short-timer Lance Lynn, but (yes, the unofficial) Roster Resource lists their starting LF as Adam Engel, whose only real attribute is CF defense, so he brings very little tothe table as a starting LF. Eloy Jimenez is listed as their starting DH, and while they could easily move him to LF and fill thatthe DH role with someone like Renato Nunez or Jose Martinez or Yoenis Cespedes or any of a few other options, they have not exactly done so, despite having an otherwise aggressive (by 2020-21 standards) off-season. Maybe that is their ultimate plan, but upgrading LF over the weak-hitting Engel is certainly another possibility. Other potential DHs on their current roster are actually very weak as their bench (again, per Roster Resource) apparently has Danny Mendick, Leury Garcia and someone named Micker Adolfo, whose minor league stats indicate he is not an MLB bench candidate due to his offensive prowess. Adding a LF (or DH) and replacing Adolfo on the bench with Engel seems like a better solution for a better overall team.
No idea on their budget, but with Kyle Schwarber going for $10mill, Benintendi does look like a cheaper alternative. And they have solid SP depth with the very underrated Reynaldo Lopez slated for the bullpen. A swap centering around Benintendi and Lopez does work for both teams...