West Bromwich Albion striker Nicolas Anelka is accused of making a controversial "quenelle" gesture, described as an inverted Nazi salute, after scoring against West Ham on 28 December.
Property website Zoopla said it would not renew its sponsorship of West Bromwich Albion, at the end of the season and another two sponsors are apparently considering pulling their sponsorship, the BBC's Newsnight has learned.
Meanwhile three fans have been charged over their alleged use of anti-semitic language at Tottenham matches.
Jewish comedian and writer David Baddiel told Newsnight's Stephen Smith he found Nicolas Anelka's justification for the gesture odd.
"Anelka seemed to be saying, 'no it's not anti-semitic, it's just a gesture in support of my friend the enormous anti-semite'," he said.