The Blues head into Saturday’s clash with Sunderland six points clear at the top of the table, with Mourinho’s men yet to lose a game in all competitions this term.
“Complacency’s the only risk we don’t have,” said Mourinho. “We have all the other risks, the risks that belong to football.
“The risk of a bad period. The risk of injuries. The risk of unlucky matches. The risk of other teams growing up, a great evolution, and becoming stronger during the season.
“Complacency is not a risk we have because it’s not the profile of this group at this moment.
“We were winning 5-0 against Schalke in the 88th minute and Eden Hazard made a sprint to defend. Winning 5-0 at minute 88. They have changed.
“There was an evolution in these young people, a clear evolution. I don’t think the group, as a group, can be complacent.”
Mourinho also rubbished speculation linking Chelsea with a sensational swoop for Lionel Messi during his news conference on Friday.
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