Harper is already a better fielding 1B than Bohm and should continue to improve, he's not moving for a few years.
Turner has the arm for 3B, and has more value there than LF (easier to find .800 OPS LFs than 3B).
Caba is projected to be a potentially elite SS, though he's probably 3 years away.
Miller is unlikely to be better than average fielder, but so is Turner at this point, 2 years away?
Sosa is a better fielder than Turner, but lacks the range to be elite, but question is whether his hitting improvement is SSS or real, and just how real? (.750 OPS, .800+ OPS?).
Bohm has two years of arbitration left, then FA in 2026. Timing is good for letting him walk, but that means getting zero value.