After Roman Abramovich bought Chelsea in 2003, he sacked Claudio Ranieri one year after and appointed Jose Mourinho as Chelsea boss.
The Portuguese had just won the treble with Porto – Champions League, Portuguese league and Portuguese Cup.
Revealing why he joined Chelsea in 2004, Mourinho told The Coaches’ Voice: “I need a project where the feeling is I play to win. I compete to win. After that, if I win or I don’t win, then that’s my problem, and that of the players and the club. But I need a project with that pressure.
“This is my nature.
Mourinho added: “That was one of the reasons why I first came to Chelsea in 2004 (above). Then, the club was already quite close to success – finishing second in the league and reaching the Champions League semi final.
“But there are no big clubs without a trophy room. So the job was to bring Chelsea to that next dimension – to win the Premier League.
“It was a job that I felt was very adapted to my mentality, which is: go to win.”
Mourinho also talked about his first game as Chelsea boss against Manchester United.
Mourinho added: “Our first game was at home against Manchester United. It was important to win, so that there was not a contradiction between our words to the players, our ambitions and the result. If you say “this season we want to be champions”, and then the first match you lose two or three-nil at home to a direct rival, you take one step back.
“We won 1-0 that day. We took one step forwards.
“Defensively, we were phenomenal. And, once we were in front, we had that capacity to kill teams in transition
“What I saw in that match was a big relation with what we tried to give the team in pre-season: mental strength, being compact, tactical discipline. And then, being really ambitious in our approach. It’s what I call the ‘all-in’ approach; you have to put everything into that game. Into every minute of the game. Every second of the game.
“In terms of your quality, your physical power, your aggression, your emotional control, everything is all in.
“That game against United was one of those where you could feel that ‘all in’. One of these matches where I felt, the game is 90 minutes – but it could be 900 minutes and they would not score. We would always win the match.”
During his first spell as Chelsea boss, Mourinho won the Premier League twice, the FA Cup and two League Cups.