Tottenham boss Andre Villas-Boas has demanded UEFA take action against Inter Milan after claiming Togo striker Emmanuel Adebayor was subject to "monkey chants" during Thursday's Europa League clash.

Adebayor scored the crucial extra-time goal, which allowed the Londoners to progress to the quarterfinals on the away-goals rule despite a 4-1 defeat on the night in the second leg of their last-16 tie at the San Siro.

"Chants were very, very easy to hear. It's difficult for Inter, we have seen it before. It doesn't mar the game but it is something to be avoided," Villas-Boas told reporters.