Rafaela's value is mostly tied into his defense. I think you have to keep him in CF. There's only a few ways the Sox could really fit Anthony in.
If Devers would move to 1B it would open up the lineup to bring up Anthony and rotate him with Abreu/Duran in the outfield and at DH.
A trade. They would have to trade Duran, Abreu, or Rafaela. It's not trading seasons right now, so it might be hard to move a player at this moment.
Lastly, the Sox could just move Anthony to 1B. Which is overall a horrible ideal, but it might be their best option for 2025. They might have to sit him down and tell him he is in their long term plans for the OF but for 2025 or at least the next few months they want him to learn some 1B to break him into the majors quicker.
I wonder how well Mayer/Campbell/Anthony play off of each other once they're all in the majors at the same time.