Mourinho has stressed the importance of stability throughout the club as a new era is ushered in.
"I think you need stability for identity and I think identity is becoming more important in football," he explained. "You need stability if you want to go in this profile direction.
"If Chelsea in past years bought lots of young players, young players need to be developed. At a certain point that development and evolution can be by being on loan and can be as a natural evolution, but another thing is the evolution and development inside your club, and for that you need stability in methods, philosophy and principles."