A video has spread on social media in which onlookers can be heard shouting "Jordan" as a fight breaks out before the man, believed to be Pickford, is dragged away.
Divock Origi, making his first Premier League appearance since August 2017, scored the decisive 96th-minute goal for Liverpool vs Everton.
Pickford wants to go onto become a "legend" at Goodison Park.
World Cup 2018 Semi-Final, Croatia vs England: Croatia thump England in extra-time to reach their first-ever final.
Goalkeeper Jordan Pickford earned rave reviews following his heroics in England's win over Colombia.