> As a manager of managers, it’s not that hard to see when a manager’s own team doesn’t like them. Getting multiple requests from people on a team who want to escape it is a huge warning sign that warrants further investigation.

Doing a good job of identifying teams who don't like their manager means discovering it before you have multiple people trying to transfer away from that team. By the time you've reached that point you've already failed in your job as the manager's manager.