Jon Gruden’s appearance at New Orleans Saints practices a couple weeks could factor into future legal arguments in his lawsuit against the NFL.

In the latest filing by the NFL as part of its appeal related to Gruden’s lawsuit against the league, those emails allow NFL Commissioner Roger Goodell to declare the exchanges to trigger the “conduct detrimental” language laid out in the NFL Constitution and Bylaws.

And, in turn, the NFL argued that the case should be compelled to arbitration in the reply brief filed in Nevada State Supreme Court on Tuesday.