With the way the portal is evolving, there is zero reason to have a player on the roster with the intention of redshirting them if they have the ability to see the field in any capacity.
A coach saying to a player you will see action in four games… that’s stupid. Kids are transferring out to lack of playing time which is understandable. So get what you can out of them. If that’s special teams great, if that’s 5 plays a game on offense or defense that’s great. But when players can take off whenever they want, use them while you have them and stop catering to them with a redshirt option if they can be useful at all on game days no matter how many plays they get