At least from the school. When a player wants to transfer, school cannot deny it and must enter their name into a transfer database within two business days when then other coaches are free to contact them.
However, conferences can still impose their rules about transferring (say to a school in the same conference) and those will not change.
https://www.sbnation.com/college-football/2018/6/13/17459902/ncaa-permission-to-contact-rule
However, conferences can still impose their rules about transferring (say to a school in the same conference) and those will not change.
https://www.sbnation.com/college-football/2018/6/13/17459902/ncaa-permission-to-contact-rule