Holston is a SR so he will be graduating.
Wheatley is a JR.
Herbert Sr and will probably start this year
Blackshear FR will probably play a lot of slot
Lee is a JR
King is a So. Hes really one of the few that Black will be competing with after his redshirt year
Overton rsFr wont ever see the field
Tahj Gary rsFr could become a good player if he is fully recovered.

If you look at that list, most of the group is older and will be graduating within the next year or two. Black will probably redshirt. So in that case he provides much needed depth down the road. If we didnt take a back this class, then we would probably find ourselves with a depth issue later. Also keep in mind that there is always attrition.