From the Watergate scandal to the investigation of Russian influence on the 2016 election, longtime political insider and self-described “dirty trickster” Roger Stone has been linked to a long list of highly contentious disputes that have had ramifications across the country. Now, the NFL concussion class action settlement can be added to that list.

Earlier this week, a lead attorney representing the class of retired National Football League players entered a filing that alleges there is a link between Stone and a south Florida attorney, who represents nearly 90 ex-players and has been a vocal critical of the class action’s leadership.