Hello and welcome to Charming!

Right now, my main hook would be Millie Potts, who is entering her 5th year this fall and will be taking her OWLs in spring. If Samuel is looking for students to tutor, she might catch his eye. Her Transfiguration scores are near the top, and she does well enough in Ancient Runes. It's Potions where she's still below her level (I keep her grades on my profile, btw, if you want to look). So if he's scouting for Alchemy potentials and offered her tutoring, Millie has a personal incentive to accept an arrangement like that.