Or were a student at SU...
The NCAA's definition of a "booster" is a bit different from what most people think it is.
NCAA Bylaw 13.02.14 (Representative of Athletics Interests) defines a “representative of the institution’s athletics interests” (“booster”) as “an individual, independent agency, corporate entity (e.g., apparel or equipment manufacturer) or other organization who is known (or who should have been known) by a member of the institution’s executive or athletics administration to:
(a) Have participated in or to be a member of an agency or organization promoting the institution’s intercollegiate athletics program;
(b) Have made financial contributions to the athletics department or to an athletics booster organization of that institution;
(c) Be assisting or to have been requested (by the athletics department staff) to assist in the recruitment of prospective student-athletes;
(d) Be assisting or to have assisted in providing benefits to enrolled student-athletes or their families; or
(e) Have been involved otherwise in promoting the institution’s athletics program.”
NCAA Constitution 6.4.1 also has a similar definition for boosters. Under NCAA Bylaw 13.02.14.1 (Duration of Status), “once an individual, independent agency, corporate entity or other organization is identified as such a representative, the person, independent agency, corporate entity or other organization retains that identity indefinitely”.
EDIT: Slightly updated...
http://www.ncaa.org/enforcement/role-boosters
Nowhere in there does it mention being a former student.