You have so long to drop before it’s official. Usually a week after the final day to enroll
Is a scholarship a binding contract between a student-athlete and a school?
No. The scholarship is an agreement between the school and the student-athlete with expectations on both sides, but the agreement is completely separate from transfer regulations. A student-athlete may choose to transfer at any time. With multi-year scholarships now available for Division I schools, those colleges and universities have the option to offer athletics financial aid for more than one year. Such an agreement requires the school to provide financial aid to the student-athlete in accordance with the terms and conditions of the agreement. However, the agreement does not bind the student-athlete to the institution any more than the current transfer rules – he or she may transfer during the term of the award.
If a student-athlete signs a National Letter of Intent, he or she cannot transfer during the initial year of competition without penalty.
All depends on the LOI. I’ve worked on these situations at a D1 school on both sides... incoming and leaving.