Who are your two solid keepers? Just looking at these alone, I don't like L Murray (neither does Oakland, it seems) or Gore (getting too old in a pass first offense). I like Foster if you have a good backup plan. But you KNOW he's gonna miss some games, so you gotta be prepared. I'd personally go with D Murray. He'll be the clear starter in TN with an offense that should be balanced and he's proven he can be stud before.
Or if you need three of the four, I'd dump L Murray.