Joachim Andersen has spoken to police after he was bombarded by death threats and a torrent of abuse online following Crystal Palace's 1-1 draw at Liverpool.
The Eagles defender was headbutted by Darwin Nunez, who was red-carded by referee Paul Tierney and now faces a three-match ban for violent conduct.
Andersen was booked in the same incident, but took to Instagram to share what he said was a sample of hundreds of abusive messages he had received since the encounter.
"Got maybe 300-400 of these messages last night," the Dane posted to his Instagram story.
"I understand you support a team but have some respect and stop act [sic] tough online.
"Hope @instagram and the @premierleague do something about this."
Palace players can choose whether or not to engage their club’s police liaison officer and the Premier League, who have a team set up to investigate, and it is understood that Andersen has elected to do so.
A Premier League spokesman confirmed the governing body had been in touch with Palace this morning to offer help.
Some of the screenshots called for the Palace player’s death, while others – many ridden with expletives – contained other vile attacks.
Many threatened not just Andersen, but his family.
"F*** you. I will kill you and your family. F*** you tomorrow. See you You will died [sic]," wrote one user, while another said: "I hope you have a long life of pain for u and ur family you f****** c***."
A third wrote: "Some tough man diving on the floor, hope the plane crashes on the way back to London. F*** you."
A spokesperson for Instagram’s parent company Meta said the organisation were in contact with Andersen’s representatives.
The spokesperson said: "We have strict rules against bullying and harassment and we are in direct contact with Joachim’s team on the issue.
"Because DMs are private spaces, we don’t proactively look for hate speech or bullying in the same way we do in other places, and we need someone to report the message in app before we can take action. No one thing will fix this challenge overnight, but we’re continuing our work with the industry and Government to help keep our community safe from abuse."
An Online Safety Bill, welcomed by both the FA and anti-discrimination charity Kick it Out, was due to be discussed in the UK Parliament in July.
The legislation is designed to impose a greater duty of care on tech companies to tackle abuse and hate on their platforms, but was postponed until the Conservative leadership campaign concludes.
Liverpool defender Virgil Van Dijk insists Nunez has the full backing of the squad despite his red-mist moment making life even more difficult for them.
With an injury list running at nine, the last thing manager Jurgen Klopp or the team needed was another absentee.
The 23-year-old summer signing's sending-off leaves Klopp currently without a recognised striker.
There is hope Roberto Firmino will have recovered from a problem which forced him to sit it out against Palace in order to lead the line against Manchester United at Old Trafford next Monday – a match Nunez will miss as he serves a three-match suspension.
On Tuesday evening Nunez tweeted: "I am aware of the bad attitude that I showed. I'm here to learn from my mistakes and it won’t happen again."
But as the summer signing, who arrived from Benfica for a potential club-record £85m fee, continues to integrate himself into the team, there will be no finger-pointing from his team-mates.
"Obviously he was disappointed and also probably with himself but it’s a learning curve and obviously we will always back him," Van Dijk said.
"He’s got the backing from us and he knows it should not happen again and hopefully it will be that way.
"He has to control himself, definitely. I think that’s a separate thing. He has to manage himself, he has to be knowing that these things can happen, especially in the Premier League.
"It will be a learning curve for him and hopefully it will never happen again."
Monday night’s draw against Palace marked the second straight match in which the Reds have dropped points and they are now already four behind leaders Manchester City.
Considering the close margins of the title race in recent years, Liverpool cannot afford to drop many more points but Van Dijk refuses to even consider the implications at this point.
"We’ve played two games so far this season and there’s still a long way to go so anything can happen," he added.
"That’s been shown over the last years so we’ll focus on ourselves.
"We don’t read what the others from the outside say about us because nobody knows what’s really going on.
"We worked very hard to try and get three points but unfortunately it didn’t happen. We keep going.
"I think with 10 men we played outstanding. We put them under pressure. Obviously we took a lot of risks because we had to score the equaliser and were hoping to get the winner.
"But (playing with 10 men) should not happen. Obviously we’re disappointed to draw and not get the win, for sure.
"It’s funny because we played the Community Shield and won and everyone was saying loads of other things and now we have drawn twice and people will write us off.
"But that’s the outside world and we concentrate on what we can influence and that’s our performance."
The highlight of the night for the hosts was a brilliant equaliser from Colombia international Luis Diaz, who has big boots to fill after taking over Sadio Mane’s role on the left of the front three.
"He’s a fantastic player," Van Dijk said. "It’s obviously something we need and he provided that bit of special action and he can be so much better.
"He’s an incredible player already so we’ll see what the future brings."
