West Ham United fans have been warned they will face action if they take part in anti-Semitic chanting towards Spurs fans on Saturday.
Spurs fans were subjected to anti-Semitic abuse from a section of West Ham fans during last season's fixture at White Hart Lane in November 2012.
"Working with the police, the Club will continue to adopt a zero tolerance policy towards any form of discriminatory behaviour," a club statement said.
"Any fan found to be acting inappropriately - including racist, anti-Semitic and homophobic behaviour - will be punished to the full extent of the law and banned from attending matches."
More top news
The man identified as the Islamic State militant known as "Jihadi John" was a "popular" schoolboy who loved Manchester Utd and S Club 7.
A man using his phone in the City of London had it snatched out of his hands by a cyclist zooming past.
A London couple have been given legal backing to push for opposite sex couples to be granted the right to have civil partnerships.