Power hitting C Zhang is up on the block. He is willing to discuss an extension, but my money is probably better spent upgrading a couple of positions. His HR rate over 162 games is 40, and his average WAR over a season is around a 4.6. He has stable ratings, and just mashes.
He also happens to be really good defensively. I want to keep him, but as I said, I think I should try to use him as an asset to upgrade another position or two. I could use a solid long term solution at middle infielder or corner outfielder.