Have to assume that this is essentially a rhetorical question - because in this very specific case - the answer is essentially - nothing - - since the existing commits from Ron Harper Jr., Montez Mathisand Mac McClung fill the existing slots and several knowledgeable voices indicate that another spot might be found and there are at least 2 potential candidates for said spot when it emerges.
But in a larger sense the answer to "How can we get these kids to stay home?" is for Pikiell & company to keep doing what they are doing - keep building - keep improving - keep developing each & every player - enhance the RU basketball reputation to the point where kids like Carey become eager to be able to commit early - so they can be assured of being able to be a part of the ascending Scarlet Knights.