According to this, he would lose a year of eligibility.
Section VI-2. Intra-Conference Transfer Rule.
A student-athlete who transfers directly to an ACC institution from another ACC
institution and who was recruited by the institution from which they are transferring, for whom the athletics department interceded in the admissions process, or who received any athletically related financial aid during the academic year immediately prior to the transfer is required to complete one (1) academic year (two full semesters or three full quarters) of residency at the certifying ACC institution before being eligible to compete for or to receive athletically related financial aid from the certifying institution. Such an
academic year of residency shall count as one of the student-athlete’s four (4) permissible seasons of competition permitted under NCAA legislation. During such a year of residency, the student-athlete is permitted to practice pursuant to NCAA eligibility rules regarding practice eligibility. A transfer student-athlete admitted after the twelfth day of class may not utilize that semester or quarter for the purpose of establishing residency.
Waivers of this ACC rule may be considered by the ACC faculty representatives, acting
as a committee of the whole, provided the student-athlete has qualified for an exception or waiver of the NCAA four-year college transfer rule. Further, the waiver request must demonstrate objective evidence that proves the student-athlete’s extraordinary personal hardship merits a waiver of the normal application of the policy. (Revised: February 2006)