Carlo Ancelotti accepts that Chelsea owner Roman Abramovich may be running out of patience over the club's slide down the Barclays Premier League.
The champions stretched their winless run in the competition to six matches with Monday night's 3-1 defeat by title rivals Arsenal at Emirates Stadium.
"I don't know (how long owner Roman Abramovich will remain patient). Obviously he won't be happy at this moment," said Ancelotti.
"I will take my responsibility, but this is a question you have to ask him, not me.
"I'm not afraid about my job. Everyone said I did a fantastic job last year. Now people are asking me about my job.
"We have to do better, obviously. It's not usual that Chelsea can't win for six games."
Ancelotti denies there is a rift in the changing room.
"These rumours are not true. Everyone knows this moment is difficult and we're not able to do what we're usually able to do," he said.
"Everyone is close to their team-mates. We won the double six months ago.
"It's impossible that everything has changed, the atmosphere from the players, in that time."
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