As recently reported, a representative not certified by the NFL Players Association has been contacting teams on behalf of Ravens quarterback Lamar Jackson. The NFL sent a memo to all teams on Wednesday instructing them not to negotiate with this person.

“The NFLPA has informed us that a person by the name of Ken Francis, who is not an NFLPA certified agent, may be contacting Clubs and attempting to persuade Club personnel to enter into negotiations with or concerning Lamar Jackson, who is currently under a Nonexclusive Franchise Tender with the Baltimore Ravens,” the memo begins.

“As an uncertified person, Mr. Francis is prohibited from negotiating Offer Sheets or Player Contracts, or discussing potential trades on behalf of any NFL player or prospective player or assisting in or advising with respect to such negotiations.