What's the rush? Training camp hasn't even started. This isn't to say that I think Ben is going to be a big contributor for us this year, but as long as we have a roster spot and we have to pay him, why not keep him around? We can cut him if and when it becomes necessary, and if we don't cut him he could potentially be useful expiring salary in a trade, even if he never sees the floor.
Obviously since we have 16 players under contract by the end of training camp somebody (Deyonta Davis, come on down!) is going to have to be cut, but there's literally no rush. We gain nothing by doing it now, and have at least marginal benefits for waiting until needed to cut him. If he were a locker room cancer and we just needed him to GO AWAY that would be one thing, but I've never seen a media report that suggested Ben was anything other than a really nice, sweet, quiet guy in the locker room.