Malfoy isn’t here yet, obviously. The process takes a while. If he agrees, he’d need to make the obligatory Nondisclosure Vows and the usual array of protection-preparation-cleansing spells, and if not, make the new staffer find a replacement from the Snakes’ scoresheet. The League protects its forfeiters well enough, Harry knows from being on the other side of it often enough, and the delay is a small relief in its own right.