They can announce whenever, but the portal doesn't "officially" open until next week.
You can announce anytime you want, but coaches have to wait until the Portal is officially open to speak to a player directly. Graduate students can speak to Coaches now I believe.
Seventeen individuals have engaged in discussions with the coaching staff regarding the possibility of transferring out. It is important to note that not all of them may ultimately choose to enter the transfer portal. This count excludes seniors, as their eligibility is typically exhausted upon graduation.
I know that Chandler participated in Senior Day, I have a feeling after the bowl game, Chandler will have played his last game as a Cajun. I do believe that we will see him in another uniform next year as a grad transfer. I think he knows that with ZC and "Lunch" he will be relegated to a backup at best. I hate to see the young man go as he has been exactly what the Cajuns have needed in a 3rd string QB. Most teams don't have that kind of depth at QB.