West Ham United's David Gold says his co-owner David Gold is disappointed after a post-match incident at the weekend.
Sullivan looked shaken during the incident in which a fan can be seen pushing his head towards his face to get his point across.
The 66-year-old, who was with a minder as he attempted to get to his car, stopped to remonstrate with the fans and managed to diffuse the situation, but it is an incident which has left many Hammers supporters feeling frustrated.
Sullivan's co-owner David Gold was quizzed via his Twitter page by a fan as to his thoughts on the confrontation, which was captured on camera and reported by many media outlets including The Mail.
“@Ray63Stokes: how is David Sullivan after the disgusting abuse he had to endure on Saturday? He's disappointed but OK. dg— David Gold (@davidgold) February 16, 2015
Gold confirmed Sullivan is ok, but noted that he was disappointed by the incident.
With tensions running high after a particularly bad defeat, supporters are entitled to be upset, but its the way this was expressed to the co-owner that has caused concern.
West Ham blog Claret and Hugh ran an editorial discussing how fan abuse caused Sullivan and Gold to quit Birmingham City several years ago.
The subject of the fan frustration was the future of boss Sam Allardyce, who had overseen yet another poor cup showing. West Ham do however sit eighth in the Premier League, and if they win away to Tottenham next season, his position will be looking more secure than ever.