Olympique Marseille and Joey Barton have apologised to Thiago Silva and Paris St Germain after the English midfielder called the Brazilian an "overweight ladyboy".
"Olympique Marseille and Joey Barton wish to apologise to Thiago Silva and his club for the inappropriate comments the English player made on social media in the past 36 hours", OM said in a statement on their website (www.om.net).
"Olympique Marseille officials have asked Joey Barton to end the row between him and the Paris Brazilian defender. The OM midfielder has promised to end right now the publication of any invidious comment against Thiago Silva."
PSG threatened action against Barton on Wednesday after the Olympique Marseille midfielder likened Thiago Silva to a transsexual and called him an "overweight ladyboy" on his Twitter feed, comments that also drew condemnation from gay activists.
Barton, who has more than two million followers on Twitter, has been involved in a spat with Thiago Silva this week following disparaging comments the Briton made about some of the PSG player's international team mates.
Thiago Silva has not responded on Twitter.
The French federation said its Ethics Committee would take no action because the incident did not happen on a football pitch.
Barton arrived in France on loan from Queens Park Rangers following a colourful career in England during which he spent two-and-a-half months in prison for assault during a night out in Liverpool.
At the time of the attack, he was already on bail for attacking former Manchester City team mate Ousmane Dabo and he stubbed out a cigar in the eye of a youth-team player at the club in 2004.
Earlier this year, Barton was forced to apologise to former Liverpool midfielder Dietmar Hamann for a similar twitter outburst.