New boss Andre Villas-Boas to bring ‘flair’ to Chelsea

“This is not a one-man show, this is about creating empathy, ambition and motivation in everybody,” he said.

“I am just one guy in this big club. Maybe I should be called ‘The Group One’. I want to group people to be successful.

“It’s not a question of me taking on Sir Alex Ferguson or other Premier League managers, it’s about a top club like Chelsea challenging for the title.

“We need to be up there from the beginning; it’s about trying to build something that can make us powerful, and help us threaten for the title as we have in the past.”

Villas-Boas says he was offered an “extremely competitive offer” to stay at Porto and acknowledged it was a “difficult separation” from the Portuguese champions.

He revealed that pre-season training will start on 6 July and he will welcome back all current players.

“I’m more than happy with the actual squad,” he said.

“Minor changes can be done and we can put some input here or there in certain sectors, but my confidence in them is for them to return to me and judge from that.

“We have plenty of time up to 31 August to make a decision.”