This is from a Maryland Terrapin club website:
The B1G Beat: Intraconference Transfer Rule
In this edition, we will address the Big Ten’s intraconference transfer rule. For starters, the Big Ten breaks down its intraconference transfer rule into two separate categories for student-athletes: “Pre-Matriculation” and “Post-Matriculation”. As defined by the Big Ten, “pre-matriculation” refers to student-athletes who have signed a tender (financial aid agreement) with another Big Ten Institution but have not triggered transfer status per NCAA Bylaw 14.5.2. On the other hand, “post-matriculation” refers to student-athletes who have signed a tender and have triggered transfer status pursuant to NCAA rules. Today, we will focus on post-matriculation rules.
As a quick reminder, transfer status per NCAA Bylaw 14.5.2 is triggered under any of the following conditions (not an exhaustive list): prospect enrolls full-time and attends classes on opening day, reports for regular squad practice, receives financial aid during summer term prior to initial enrollment, etc.
What is the Big Ten intraconference transfer rule for a student-athlete who has signed a financial aid tender at another Big Ten Institution, and has triggered transfer status?
He or she may not represent an alternate Big Ten institution in intercollegiate athletics competition until the individual has completed one (1) full academic year of residence at the second Big Ten school. Furthermore, he or she will be charged with the loss of one (1) season of eligibility in all sports (B1G 15.01.5.A).
Please note that this is more restrictive than the NCAA rule, insofar as a student-athlete transferring from another Big Ten institution will be charged with the loss of a season of eligibility. In situations where a student-athlete who signed a Big Ten financial aid tender transfers to another institution outside of the Big Ten, and later subsequently transfers to another Big Ten school, the intraconference transfer rule would still be applicable to the student-athlete (sit a year and lose a year). In situations where a student-athlete has never signed a Big Ten financial aid tender (walk-on) and transfers to another Big Ten institution, the intraconference transfer rule would not apply.
Furthermore, unlike both the NCAA and the ACC, there is no graduate student exception to this rule. Therefore, absent a waiver (which is never guaranteed), a student enrolling in graduate school at Maryland who has ever signed a tender with another Big Ten institution will have to sit an academic year in residence and be charged a season of competition in all sports.
http://www.terrapinclub.com/the-b1g-beat-intraconference-transfer-rule/