Maurizio Sarri defended his style of football after Chelsea were thrashed 6-0 by Manchester City but said his players were not fulfilling his intentions on the pitch.
Defeat at the Etihad Stadium was Chelsea's third in succession away from home in the Premier League, and the manner of the Blues' first-half capitulation, falling 4-0 behind inside 25 minutes, left Sarri unable to explain what went wrong.
The 60-year-old led Chelsea on a 12-game unbeaten run from the start of the season through to late November, but they have since lost six times.
Sarri's men are sixth in the table, outside the qualifying spots for the Champions League and 15 points behind leaders City, who romped to victory courtesy of Sergio Aguero's hat-trick, a brace for Raheem Sterling and a goal from Ilkay Gundogan.