A person who works for the NFL says while several issues have been resolved regarding HGH testing for players this season, the league and union can’t agree on whether the commissioner will hear appeals for violations other than a positive test.

The person sent an email Thursday to The Associated Press to update the status of negotiations between the league and the NFL Players Association. The information was provided on condition of anonymity because the sides’ talks about the drug policy are supposed to remain confidential.

The email says “the final hurdle appears to be” the union’s desire to have someone other than Roger Goodell rule on appeals that involve violations of the law or “demonstrated use” of a performance-enhancing substance without a positive test.