Bradford has leverage but we also have leverage. With him coming off two torn ACLs, who knows what he'll get on the open market. He might only get a prove it deal at like ~$5 mil a year.
The Rams do have leverage to ask him to take a pay cut because I don't think any team is going to give him $10 mil a year. Bradford is set to get paid a base salary of around $13 million next year. I think Bradford's market value estimate is likely in the $7 million range with his injuries. Could be less, could be more.
So logic would dictate that if the Rams want to keep him but don't want to pay him $13 million and Bradford wants to stay but also doesn't want to get paid less than his perceived market value...the pay cut they could bargain for would be between $7 million and $13 million.
This is line of logic is similar to the Coase Theorem for all those economists out there.