Anyone can DH. I’d think they want a RHH for SS or RF. Of course they have Refsnyder (.899 vs LHP) and Romy Gonzalez (.833 vs LHP) capable of playing those positions, although neither is much defensively.
1b was the glaring need, but they aren’t going to platoon Casas, even though his slow start will be inevitable.
I think the Sox best all-around OF is Duran-Rafaela-O’Neill, but Abreu has been too good to bench or demote. I’m not a fan of bouncing players around defensively as part of a platoon, but Cora is clearly not bothered by it. But if he just commits to leaving Rafaela at SS, then I suppose a RHH platoon bat to compliment Abreu is the most likely add…