It's hard to know how his D will age, and RF in Fenway is a very difficult position to play. So is CF, and he wasn't too bad. (-4 on OAA disagrees.)
Dugo was never considered a good RF'er, until suddenly he looked good in 2023.
He does seem like the easy guy to trade and replace with a RHB, but just doing so for the sake of it, may backfire.
Chances are, he will be back in 2024.
I really like Duvall, but 3 years might be too much.