I don't think most of the people who would want to sell high on Wells is thinking so because they fear Rich Hill redux. If you think Wells is likely to regress, then you can capitalize on his value since you have several options who are decent options to be as good as future Wells(Marshall, Gorzelanny, even Samardzija/Cashner/Jackson). Problem is there's not many places on the roster to upgrade, so unless Wells goes in some package for Utley or something, there's not much risk of him getting dealt.