I agree on Casas, with two notes. First and foremost, we have to know his injury status. He's always hit, so I am not concerned about that. But if he is out until May, we need a contingency plan. Second, and less important, a righty like Alonso is a better fit.
Yes to the best pitcher that we can sign or trade for.
But no to Realmuto. In order to spend an extra $15-20M, he would need to be a substantial upgrade over Narvaez, and I am not seeing that. I also have no interest in trying to outbid Philly.