NCAA football transfer rules. Actually, exceptions.
"If you are transferring to a Division I school for any of the previously-listed sports, you may be eligible to compete immediately if you were not recruited by your original school and you have never received an athletics scholarship."
"Exceptions
Exception: If you meet a legislated exception, it means a specific regulation will not apply to you. The school to which you are transferring determines whether you are eligible and has the authority to apply exceptions.
One-time transfer exception: If you transfer from a four-year school, you may be immediately eligible to compete at your new school if you meet ALL the following conditions:
You are transferring to a Division II or III school, or you are transferring to a Division I school in any sport other than baseball, men's or women's basketball, football (Football Bowl Subdivision) or men’s ice hockey. If you are transferring to a Division I school for any of the previously-listed sports, you may be eligible to compete immediately if you were not recruited by your original school and you have never received an athletics scholarship.
You are academically and athletically eligible at your previous four-year school.
You receive a transfer-release agreement from your previous four-year school.
Waiver: An action that sets aside an NCAA rule because a specific, extraordinary circumstance prevents you from meeting the rule. An NCAA school may file a waiver on your behalf; you cannot file a waiver for yourself. The school does not administer the waiver, the conference office or NCAA does."
http://www.ncaa.org/student-athletes/current/transfer-terms