13.1.1.3 Four-Year College Prospective Student-Athletes. An athletics staff member or other representative of the institution's athletics interests shall not make contact with the student-athlete of another NCAA Division I institution, directly or indirectly, without first obtaining authorization through the notification of transfer process. Before making contact, directly or indirectly, with a student-athlete of an NCAA Division II or Division III institution, or an NAIA four-year collegiate institution, an athletics staff member or other representative of the institution's athletics interests shall comply with the rule of the applicable division or the NAIA rule for making contact with a student-athlete.

I'm sure you could argue either way whether an agent talking to a booster is "indirect" contact with a "representative of the institution's athletics interest"