Inter Milan coach Roberto Mancini admits he was upset with the booing Marco Materazzi received from fans at Emirates stadium yesterday for their friendly with Valencia.

"I don't think it's right, these games are only friendlies and it's not necessary for the fans to behave in this way," said Mancini.

"I'm happy with the way Materazzi coped with all the booing, He's a great professional and he never lets little incidents like this affect him. In fact, I feel he plays better in these situations. The stadium is fantastic, but the atmosphere is always better in Italy."