Ryan - Should not be traded, too many question marks in next year's rotation, Lopez, Abel, and Festa will be coming off of injuries, Matthews and Prielipp have had mixed results, and there isn't anybody I see at AAA knocking the door down (or even knocking on the door, for that matter).
Jeffers - If they get the offer they want, trade him, if not keep him. Do not trade him just for the sake of trading him. He's not blocking anyone, there is no C at AAA or AA that should be called up.
Bell - Same as Jeffers, if you get an acceptable offer, take it. The team can't really afford a DH only type player, but Shelton seems to have figured out the defensive alignment, and sits Bell only if he feels Buxton needs a day off in the field. As long as he is producing, keep him here.
Larnach - Should be made available, but only if the team falls out of contention over the next 2 1/2 weeks. He's producing as the strong side platoon bat, and his fielding is passable right now. He won't bring back a big return, probably a High A or AA player, but could be an interesting add-on in a Jeffers or Bell trade.
Buxton - NOT GOING ANYWHERE, he's said it, the team has said it....