Yes, anyone can receive NIL money if someone wants to pay them but why would an NIL collective give money to a person who is not eligible to play? The NCAA could establish academic requirements and all of its members could agree to abide by them. There is no constitutional right to play college football and, at least at the moment, college football players have to be enrolled as students at the school they play for. The NCAA can set the rules as to what academic/admission requirements players must meet to be enrolled as a student.