I think Durrington is up for middle infield depth. Branyan doesn't solve that. Cirillo could play 2B, or SS in an extreme pinch. Russell, I think it's safe to assume, cannot play anything but 3B, 1B or possibly LF or RF. And no clancy, Russell can't catch. Because Durrington can play 3B, SS and 2B, he is now Billy Hall (albeit a more Australianized version of him), while Billy Hall is now Jeff Cirillo. When Branyan comes back, he immediately becomes simply Russell Branyan, with less playing time than before. Durrington has to stay, for better or worse, until either Cirillo comes back or another middle infielder is produced.