CBS is preparing to offer Tony Romo a substantial raise before he becomes a free agent.

Romo has one more season remaining on his three-year contract that is paying him approximately $4 million per year.

Romo is likely to become the highest paid NFL analyst.

Jon Gruden was paid $6.5 million by ESPN, but that number grew every year that Gruden did not leave to coach. 

CBS is the favorite to keep Romo.