As someone already mentioned, no point in getting rid of Wells now since he is a Sr, and MAYBE contributes this season. As for Crow and Jones, keep them on the roster this season, then, before next year, you can politely let them know that they have been here 4 years and that it is time to move on (especially if they have the credits to graduate).
Still holding out hope for Jelani Hamilton, Earl Moore, and Jake O'Donnell, but if they don't contribute this season, they might also be asked to move on before next season.