Malcolm Kelly will stay until the Redskins find another player in the preseason that interests them that gets released from another team.
There is always a flush of roster activity towards the end of the preseason when 2-3 spots change hands and players new to the team are on the final 53 man roster.
For those rooting for Kelly and Banks, from what I am reading Niles Paul and Terrence Austin are having much better camps than either player.
If Austin and Paul show they can be threats in the passing game as well as quality special team performers they will be retained over Banks who is one dimensional (now only on punts as kickoffs are a joke in the NFL) - and at 5'7 and 165 has durability issues going back to last season's knee injury.