Mourinho took an entirely different approach when he picked up the reins at Stamford Bridge for the first time in 2004, splashing out a fortune on ready-made talent such as Didier Drogba, Michael Essien, Ricardo Carvalho and Paulo Ferreira.
Chelsea, though, have made a big investment in youth in the last year or two, bringing in players like Eden Hazard, Oscar, Romelu Lukaku and Kevin De Bruyne and the new manager is relishing the prospect of working with the younger players.
"It's a different situation but it's something I want to live," Mourinho told his first news conference since signing a four-year contract. "I haven't changed my nature and I won't accept development without trying to win - ever.
"It's more difficult to keep trying to win and trying to be successful while at the same time developing young players and giving an identity to the team - but it's something I want at this stage of my career.
"Titles I have, money I have, I need challenges. Nothing motivates me more than challenges. It's about changing the club, I think, and the club thinks so too."
"Imagine if you bring back Lukaku, De Bruyne and perhaps Kalas," said the 50-year-old manager. "Bring three guys back, that's zero [spent] because the investment was made before.
"We want to go in this direction. The one or two we may buy are complements because the structure and philosophy is this.
"I'm more than happy to do that and to help these young guys grow up. Not build the team, because the team has a structure to it, but I want to help the team improve."
"I don't need anybody to push me to have that ambition," said the former Real Madrid, Inter Milan and Porto boss. "I've enough motivation and self-esteem myself.
"If we don't do it but show an evolution in the first season, show we're moving in the right direction, I think we'll be champions in the second season.
"When you have this profile you can't think the best will come next year. It has to come in two, three, four, five or six years' time."
"He is a Chelsea player with
