Porto have never won on English soil in the Champions League but will look to end that dreadful record at Stamford Bridge.

The Porto coach has vowed not to change their attacking style and with an influx of new players in the summer, the Portuguese side will prove a stern test for Carlo Ancelotti.

Ferreira has been in charge at Porto for the last four seasons but has yet to see his side beat an English team on their travels.

Last season both Arsenal and Manchester United prevented him from achieving the feat and now Chelsea stand in his way.

The Blues have also enjoyed home victories over Porto in recent years - winning 2-1 in 2007 and 3-1 in 2004.

"In the last two seasons we have started badly against English teams but still finished top of our group," said Ferreira.

"I don't know why we have not won against English teams in England but I hope it will be different this season."

Ferreira believes Chelsea are one of the strongest teams in the competition but refuses to compromise on the attacking style that has left them unbeaten in the Portuguese league so far this season.

"Chelsea are one of the best teams in England," he added. "They are very difficult to start with in the group.

"They have very good players who are mature and very experienced. They have been playing together for a very long time.

"They are the strongest team in this phase. But we also have a very strong team. We want to keep our own identity and will play the way we always do.

"We want to reach as far as we can in this competition. We have been working very hard in the last two years to improve this team and get to a level of where we want to be.

"The difference between this year and last is that we have a lot more players with experience for their national teams but we will continue to play in the style we are used to."