"Hagrid, how would you feel to become a TA in the Care of Magical Creature class for two years, because according to your experience and your diploma as a beast handler, you are a bit overqualified for the position as a groundskeeper, but the qualifications you have, are enough for being a TA for two years and if you are successful during these two years, I would be offering you to replace professor Kettleburns since the man planned to retire."