CELTIC striker John Guidetti has come under fire after appearing on Dutch TV singing "the h*** are deid".
The Hoops star sang the song at the end of an interview on Holland's FC Rijnmond football programme.
He was reciting a song that is sung about him by fans.
Rangers fans have now taken to Twitter calling for the player and the club to issue an apology.
He sang: "Oh John Guidetti, puts the ball in the net-y, he's a Super Swede and the h*** are deid, walking in Guidetti wonderland."
The Celtic forward described the chant as "a good song".
Rangers Supporters Trust commented: "Celtic player laughing & singing about the 'H**s being deid'. Imagine a Rangers player used the word 'F****n'?"
Dave Scott of the anti-sectarianism charity Nil By Mouth Campaign said more needed to be done to educate players over offensive terms.
He said: "Just a few weeks ago the Scottish Professional Football League (SPFL) knocked back our bid to become its charity partner. We offered to deliver awareness training to players about words, phrases and actions which are likely to cause offence or controversy.
"This would have been particularly useful to players from outside Scotland. This incident highlights once again the need for such a programme with players."
??This comes a week after the Herald revealed the launch of a campaign backed by the official Rangers fans board to lobby First Minister Nicola Sturgeon to make the use of the word 'hun' illegal following online abuse of pop singer Amy Macdonald.
The move is linked to an internet petition which says the word is a term of "religious hatred, a derogatory and sectarian term for a Protestant".
The campaigners say those using the phrase should be treated no differently than those who use offensive words to describe Catholics.
The campaign to outlaw use of 'hun' came after the word was used in a Twitter tirade directed at Macdonald after she criticised England footballer Stan Collymore in a row which began when he linked Rangers and Chelsea to right wing groups such as Combat 18.
Macdonald spoke out after the Talksport pundit said he we was vindicated as reports from Ireland claimed one Chelsea fan hunted for pushing a black man off the Paris underground was a former Royal Ulster Constabulary officer and had been a Rangers fan.
She said back: "What utter crap. I support Rangers. I'm not racist or sectarian. I have no interest in Chelsea and I'm NOT an anomaly."
The campaign petition argues that the use of the word 'hun' is as offensive as the term 'fenian".
The organisers believe the word 'hun' is used as a "term of religious hatred, a derogatory and sectarian term for a protestant or those perceived to be protestant by supporters of other football teams".
The campaign's letter to Nicola Sturgeon also calls for a ban on chants in support of the IRA, saying they are "unacceptable and have no place in society". It says they should be "outlawed and made illegal and those singing them dealt with by the courts and banned from entering football stadia".
The letter, which will also go to justice minister Michael Matheson, concludes: "Let's clean up Scotland & Scottish Football and celebrate all that is good in the beautiful game and Scotland. Parity for all."
The petition was understood to have also been a response to Collymore's own online protest petition saying sponsors and TV schedulers should boycott Rangers matches as long as supporters continue to sing sectarian songs.
Collymore began his campaign while posting footage to his 700,000 plus followers taken at Hampden of fans singing the sectarian Billy Boys loyalist song which contains the reference "up to our knees in fenian blood".
Celtic warned fans they can no longer call Rangers fans 'h***' 14 years ago.
The ban emerged when some fans were reportedly thrown off the club's internet site for using it.
At the time, Celtic administrator John Cole said: "It's a word that can cause offence and at Celtic we don't want to be offending anyone, so we are asking that people who have a problem with this look at our social charter and other movements we are involved with."
The Scottish Government's 2014 Social Attitudes Survey found that 58 per cent found the term 'h*n' in casual conversation was unacceptable, 12 per cent said "it depends", 14 per cent said the have never heard of the term used to describe a Protestant and eight percent found it acceptable.
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