The Spanish international has been linked with a return to Atletico Madrid, especially in light of the Blues needing to get rid of one of their foreign players.
Premier League rules state that only 17 of the 25 registered players can be foreign, but after the signing of Cesc Fabregas, Diego Costa and Felipe Luis – and the departures of Englishmen Frank Lampard and Ashley Cole – Chelsea are one over.
However, Mourinho says Torres will not be sacrificed.
“Three strikers is fundamental in the squad and we have three,” he tells Sky Sports News.
“Nando is one of them. We have a good squad. The perfect squad would be with this 18 players, not 17, but rules are rules and we are working hard, even here, to not have these kind of problems in the future.
“[We want] to have more English players in our squad which we are going to have in the future but in this moment we are still in the middle of this process.
“So at the moment we have to make a decision about one player not to be on that list.”