Brazil coach Dunga has hit out at Chelsea for sacking compatriot Luiz Felipe Scolari.

"In football you need quality and Scolari is an established trainer despite the fact that he was sacked today," he said about Scolari.

"There's no doubt about his skills, he's a world champion and so you cannot doubt that.

"(Manchester United coach) Alex Ferguson is unique, he is the only one who has been in charge for many years.

"European football and Brazilian football trainers have not enough time to train and to get to know each other, so it's difficult.

"It's a question of time."