Watford insist their ongoing dispute with Everton over the "illegal" approach of Marco Silva is about "making a stand" and not compensation.
The Hornets reported Everton to the Premier League after they tried to get their Portuguese manager, who has since taken charge at Goodison Park, last season.
The two clubs have gone through a failed mediation which means Watford forfeit the right to compensation, but the club say that isn't the reason behind continuing the dispute.
They said in a statement: "The club have made an official complaint to the Premier League over an allegation of an illegal approach to former manager, Marco Silva. At the request of the Premier League we entered into mediation with Everton in a process that involved club officials and their respective legal teams, with no conclusion being reached.
"In pursuing its disciplinary claim, the club has known from the outset it forfeited any right to compensation as a consequence of not following a proposed arbitration process. We believe this situation is not about a compensation figure but the principle of making a stand when the actions of one Premier League club completely undermine and cause intrinsic damage to a fellow member club."
Everton wanted Silva to replace the sacked Ronald Koeman last November but were unable to get their man, who was keen to leave. Watford disposed of Silva in January. Silva, who was replaced at Vicarage Road by Javi Gracia, ended up at Goodison Park anyway, when he was appointed after Sam Allardyce's exit.