Barring injury, Chelsea will not be adding any significant transfers during the January window.
Asked by talkSPORT whether he would be on the market for new players next month, José Mourinho said: "No. We have a short squad, but we've got good players, some younger, some older, but the squad is very, very good.
"We can't lose players for a long period of time, but our project is to start and finish the season with the same group of players, so there will be nobody to leave and nobody to come in either."