I’m the boss
Chemistry is over rated. As a manager, it’s not my priority if players like each other. They just have to be professional and play together.
Think about your own workplace. There are co-workers you can’t stand, but who are good at their jobs. Baseball history is replete with clubhouse acrimony and that became anecdotal (see the 1977 Yankees) en route to a championship.
Everyone must be treated fairly, but not the same. Sometimes, player division can be used by a manager to his – and the team’s advantage. If envy toward a teammate motivates someone to put in the extra effort working out, in the batting cage or in the bullpen, so be it. Sulkers and whiners find themselves waking up in Pawtucket. As far as players on the DL, they need to do whatever the doctors and therapists order, but they won’t travel with the team or be in the dugout or clubhouse during games.
They can watch from a suite along with the rest of the VIPs.