When asked about the lack of movement on the transfer front, Mourinho told Chelsea TV: "Stability. Stability, and I believe good work because our choices in the big percentage are correct.
"The players are adapting well. The club are happy with the players. The players are happy with the club.
"The club wants them to stay. They want to stay by themselves and I think this is a very happy and friendly group with a lot of quality in football aspects but also a happy family and I think we can dream of good things because the group is fantastic."
The Blues have signed Claudio Pizarro, Florent Malouda, Tal Ben Haim and Steve Sidwell in the close season and Mourinho insists that, Pizarro apart, the new arrivals will act as insurance should last season's injury crisis be repeated.
Asked about the importance of the effect of new signings, the former Porto manager said: "It depends what we mean by new blood. Sometimes new blood means we need to shake the team and we need to bring in new faces to make it competitive. I think this case I don't think it was needed.
"I'd say that only Pizarro has come in to bring us something different because he is a different striker than what we already have and when we want to play many times with two strikers we need that extra man with his quality because Sheva (Andriy Shevchenko), Didier (Drogba), (Salomon) Kalou are different players to Claudio.
"The reality of Sidwell, Ben Haim, Malouda is to protect us against things that happened last season. We had problems with central defenders so we have Ben Haim and Alex.
"We had problems with wingers. With Arjen and Joe - with people injured. We have Malouda who is a very good player, we have Shaun (Wright-Phillips) already.
"We have problems in the future with centre midfielders with the African Cup of Nations so we have a young, English boy like Sidwell.
"So I think the point was the team didn't need fresh blood, they needed protection and we got this protection with these boys.
"But also they will get chances outside of this protected period so it is good all round."