The Football Association says it is urgently investigating allegations referee David Coote discussed showing a yellow card with a fan before a match.
The Sun newspaper claims Coote, 42, discussed the prospect of booking then Leeds player Ezgjan Alioski with a supporter of the West Yorkshire club the day before a game in October 2019.
The Sun alleges that after Coote booked the player, he messaged the individual back to say: “I hope you backed as discussed.”
An FA spokesperson said: “These are very serious allegations and we are investigating as a matter of urgency.”
Eileen Gleeson on facing Wales in Dublin: ‘The Aviva is in our soul, this is our home’
Sports Books of the Year: Conor Niland’s The Racket the best in a year dominated by autobiographies
Manchester City approach the surreal as they head for Liverpool
Ruesha Littlejohn keeps Ireland’s Euro 2025 hopes alive in tense stalemate against Wales
Coote said in a statement: “I strongly refute these false and defamatory allegations.
“Whatever issues I may have had in my personal life, they have never affected my decision-making on the field.
“I have always held the integrity of the game in the highest regard, refereeing matches impartially and to the best of my ability.”
Coote was already under investigation by his employer, Professional Game Match Officials Limited (PGMOL) and the Football Association after footage emerged which appeared to show him making derogatory comments about Liverpool and their former manager Jürgen Klopp.
European football’s governing body Uefa has also appointed an ethics inspector to investigate a video, published by the Sun, purporting to show Coote snorting white powder during last summer’s European Championship in Germany.
On the latest allegation, a PGMOL spokesperson said: “The facts need to be established in light of these very serious allegations.
“We adopt a zero-tolerance approach to any breach of our integrity code of conduct, which is signed by all match officials on an annual basis.
“PGMOL Board is committed to taking the appropriate action should any breach of that code be proven.
“David Coote remains suspended and subject to an ongoing disciplinary process by PGMOL, separate to the investigation in to this matter which will be carried out independently by the FA. We will be making no further comment at this stage.”