Assistant referee Constantine Hatzidakis will not be involved in any matches while the Football Association investigates an incident in which he appeared to elbow Liverpool defender Andy Robertson.
Hatzidakis made contact with Robertson's chin after the Scotland international approached him at the end of the first half in Sunday's 2-2 Premier League draw with Arsenal.
An angry Robertson and several team-mates approached referee Paul Tierney, who booked Robertson.
Refereeing body PGMOL said it "will not be appointing Constantine Hatzidakis to fixtures in any of the competition" during the FA investigation.
Former Blackburn striker Chris Sutton told BBC Radio 5 Live on Sunday: "He has to be banned.