London: Chelsea on Thursday urged their fans to keep their support "positive" in Sunday's League Cup final against London rivals Tottenham Hotspur, amid fears over anti-Semitic chanting.

Tottenham have long-established links with the Jewish community and Chelsea admitted that previous games between the teams had featured "a deeply unpleasant and unwanted level of anti-Semitic abuse". Chelsea's fans have come under scrutiny after footage emerged showing a group of supporters preventing a black man from boarding a Paris metro train last week and chanting racist songs.