Just call him Coach. TOSU does

From Urban Meyer's contract (Go here for the PDF):

The Ohio State University, on behalf of its Department of Athletics ("Ohio State"), and Urban F. Meyer ("Coach") have had certain discussions regarding Coach's employment as Ohio State's head football coach. The parties recognize that Ohio State shall present Coach with a more thorough employment contract addressing additional terms of employment in the near future. Until that time, the parties hereby agree to the following terms as follows:

And so on and so forth. A couple of the many things of interest: Meyer's base salary ($700,000 per year) is half what he gets from "Apparel/shoe/equipment" ($1.4 million); and he gets $250,000 if Ohio State plays for the national championship.