Oh I would definitely love to host him. If he's a friend of Becks then I can definitely see Hermione Longbottom hosting him. Also he could have been a friend of the late Mr. Charlie Hutton so that Lucy can host him or have hosted him. Felix Prewett still lives with mama so there's an in to be hosted by the Prewetts. Felix could also be a friend. And for good measure I think Everett Swann is about the right age for them to be school friends so he is available for that as well.

Oh! and he can make Marie-Louise Prewett uncomfortable by forcing a stay with them since one, her stepdaughter likes to just randomly invite family so if he stayed with a Prewett or Longbottom he may have been invited by her. And two, if he stayed with Fallon and Jesse he may know Malou since she is Fallon's BFF.