Andre Villas-Boas fears Lazio's fine for monkey chanting will not stop their fans doing the same again on Thursday when they host Tottenham at the Stadio Olimpico in the Europa League.
Lazio were last month fined £32,500 after UEFA found their fans guilty of chanting racist abuse towards Jermain Defoe, Andros Townsend and Aaron Lennon in September's 0-0 draw at White Hart Lane.
UEFA have been criticised in the past for their lenient punishments for racism and Villas-Boas told a press conference on Wednesday night: "UEFA decided to punish Lazio and rightly so. It doesn't mean that incidents won't happen again tomorrow."
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