With Fernando Torres nursing a knee injury Mourinho had been expected to bolster his forward ranks this month with Samuel Eto’o, a recent hat-trick against Manchester United aside, struggling for form and Demba Ba reduced to the role of bit-part player.
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"Many people don't understand why we don't do [business] but, in the summer, you will understand," said Mourinho, when asked why he hadn’t invested in a striker this month. "No [deals lined up for a striker], but we know what we want."
The Blues boss also admitted new signings Nemanja Matic, Mohamed Salah and Kurt Zouma are part of a long-term plan for the club, and he won't be rushing for a new front man.
"We don't want emergency plans, it's not our profile now," he added. "The players we're signing now are the right ones for our future: Matic, Salah, Zouma, a young kid for the future.
"We won't sign a striker now as an emergency plan to score half a dozen goals to give us half a dozen extra points, whatever that would mean for us."Our objective is to finish in a Champions League spot. That's the competitive objective, because the greater objective is the improvement of the team and preparing the team for the future."
Chelsea travel to Premier League leaders Manchester City on Monday and will move level on points with Manuel Pellegrini's side with a win.
City are unbeaten in their last 20 games in all competitions, but Mourinho insists Chelsea will not change their approach to the game.
"The reality is they [City] have had many crucial decisions in their favour," he added.
"They were lucky against Liverpool, against Newcastle and against Tottenham. But I repeat this is just pure coincidence.
"We are not going to change our philosophy. We are going in a certain direction, and just because we are playing a certain opponent doesn't mean we are going to change that. We are going to try to win."