Manchester City manager Manuel Pellegrini says he is not concerned with Chelsea's results.
The Blues opened a three-point gap at the top of the table after Monday's win over Stoke City but the Chilean says the Premier League title will only be decided on the last day of the season.
"We are not thinking about Chelsea," Pellegrini said.
"We are thinking about just our team, we know it is important to have our own pressure. You never win the title in December.
"We have a long five months to continue playing as well as we are doing so far, and we will see at the end of the season which team has most points.
"Maybe [Stevan] Jovetic and [Vincent] Kompany will be [back] soon, the end of this week or next week. Edin Dzeko and Sergio Aguero will be the second part of January."
Asked to give an update on a possible new deal for midfielder Frank Lampard, Pellegrini said: "I hope Frank's situation will be resolved in the next days.
"I said in the beginning it will be during December we are going to have the last decision. I repeat Frank is very important for our team so I hope he will stay here."