All of Casas' value will be based on health. You have a lot of mid-tier teams like Pitt, Miami, Texas, Mil, AZ, and maybe 1-2 more teams that will be looking for minimum-salary equivalents at 1B, and maybe more looking for cheap DHs. Of course they will be looking at his injury history, but every single one of them will also be thinking about his 126 OPS+ from 2022-2024, with three control years left.
If we get into a Duran/Campbell, etc. for #1/#2 SP situation, for example, and the other team wants more, Casas will add real value. But mostly if he looks like he's coming back sometime in April.