Former England assistant manager Gary Neville is demanding an apology over a newspaper article that claims "friction" between him and Roy Hodgson "undermined" the team's UEFA Euro 2016 campaign.

England crashed out of the tournament at the hand of Iceland at the Round of 16 stage on Tuesday (AEST), prompting Hodgson, along with assistants Neville and Ray Lewington, to quit their positions.

The report in The Observer claims there was a "deterioration in the working relationship" between Hodgson and Neville, while coaching staff are said to have become involved in "a number of disagreements".

A source is quoted as telling the paper: "The players got on fine. It was the coaches who fell out."

The article was tweeted via Guardian Sport account on Saturday — the sister paper of The Observer — but Neville responded angrily when he discovered the story.

Targeting the newspaper and the journalist behind the piece, he tweeted: "This is absolute bullshit! Apology? Removal of article? Let me know!"

Neville, who endured an unsuccessful spell in charge of Valencia last season, is yet to receive a reply on Twitter, but it is unclear whether the newspaper has made contact by other means.