First of all, not the point. (But it is a union business.)
Second, changing positions in MLB is extremely common. I would doubt every single player who changes was ordered to do so. (Wasn’t Story approached about 2b? Or A-Rod when he went to third?)) And certainly players have refused without derailing their team. Some have, with Mike Trout being a notable example. But giving them the option first isn’t always so bad. Heck some might think it’s not really an option, but at least appreciate they were approached about it…