He almost certainly has to stay unless moving him results in a significant upgrade at 2B which I just don't see happening.
Right now the potential contending core for 2014 should be Rasmus, Bautista, EE, Reyes, Lawrie and Melky. That is good enough to contend if AA can get strong defenders at 2B and C. If he can get guys with a bat as well that is a bonus, but I don't think its critical. This team would be above .500 right now if we had glove first guys at 2B and C.
This is all assuming Melky can run again otherwise we would need a LF as well and he probably falls to DH.