Regulus recalls there being such a case, but not the exact details. Something about Depriving of Magus' Power, but the outcome and the process didn't register fully. Maybe if he had more time in Durenmar, he could find the info.
Nele shakes her head "I hate to share too much information with Magi outside the House, but you're a Quesitor. As you, hopefully, know, there are different Humours. Each also affecting one's personallity. and they also correspond to different types of animals. When the dominant Humour is too different, we've found that it makes the teaching more difficult, so we usually transfer the apprentice to a different Magus, who will be more compatible."
At this moment, your retinue arrive.