The rumor/speculation I'm hearing is massive offer from Red Sox for Ohtani.
Basic gist Marcelo Mayer, Brayan Bello, Ceddanne Rafaela, and Triston Casas for Ohtani.
If this deal gets done it would be massive and the Red Sox I think would have to agree a contract with Ohtani for a long term extension first. There's no way you commit that many resources to a guy who just walks at the end of the year.
article here:
https://clutchpoints.com/red-sox-perfect-shohei-ohtani-trade-boston-offer-angels-2023-deadline