He's literally the manager. If they were asking him to play first base he was the one who asked him. Thats like.....obvious. I'm not sure what your work experience is, maybe you're used to managers who cower in fear and don't have the conversations that upper management asked them to make but I don't think Cora is that guy, I don't think you think he's that guy either. Whether or not he agreed with it is something entirely different.
It does appear there was a communications break down. But no one ever told Devers he was moving full time to DH, and those words came DIRECTLY out of Coras mouth. He recently gave an interview in spanish. Heres some of it:
Alex Cora Breaks Silence on Rafael Devers Departure: ‘We Failed on Communication’ Former Red Sox manager Alex Cora addressed the departure of Rafael Devers, admitting the organization could have handled the situation much better. “It’s one of those situations where, as a group, we could’ve done a much better job communicating,” Cora said. “We should’ve sat him down and laid it out clearly: This is the situation, these are the directions we’re exploring. We don’t see you as our third baseman of the future. That’s it.” Cora emphasized that no one told Devers to throw his glove away, calling that part “********.” However, he acknowledged that everything changed after the team signed Alex Bregman and Triston Casas got hurt. “Looking back, I know we should’ve been upfront with him from the start of the offseason,” Cora continued. “We needed to have those real conversations. Those talks never happened.”