After doing a few moments of research I have discovered that Austin Reiter has been the starting Center for the Chiefs that past two years. Since it's September 14th and he's still on the market, chances are he's no world beater. But if we're forced to bring in another Center then I can live with bringing in a guy with starting experience with the Chiefs.
IR is only 3 weeks now and an unlimited amount of players can return from it. If McCoy goes to IR for 3 weeks, they could use someone to fill his roster spot on the OL in case of, and hopefully not, another injurt to the OL.