Jose Mourinho says Chelsea are unhappy after their miserable start to the season, but pointed to recent reminders of the squad's calibre.

The Premier League champions are seeking a much-needed boost in Wednesday's Champions League Group G clash with Maccabi Tel-Aviv after one win in the opening five league games this term.

"You have just to go back three months and three months ago we were the best team in the country, the best manager and the best players. We are not happy, but we know what we are," said Mourinho, whose side lost 3-1 at Everton last Saturday.

"We start so bad. (But) it's not because of that that somebody can steal what we are.

"Nobody can steal what we are, nobody can steal our trophies, nobody can steal our history. We know what we are: champions of England."

Mourinho thinks people are looking for problems which are not there.

"It's so simple to accept that the results are not good because that's football," he said.

"It's so easy to connect that with football, injuries, bad luck, bad moments. It's so easy to do that that it's quite sad many people try to find problems where problems don't exist.

"Our problem would be if problems are real, but in fact the only problem we have is not getting good results."

Reports of sour faces at Chelsea's Surrey training base is natural after results, Mourinho said.

"You cannot expect we are all smiles, laughing and jokes," the Portuguese added.

"When people is not getting the success that you work for people are obviously frustrated and not happy.

"Confidence levels... especially people used to winning all the time. When you don't, it's a strange feeling.

"I promise you we are working. When we say business as usual, it's true. With one difference: we are not happy."

Mourinho sported a close cropped hairstyle and during his first spell he said he was ready for battle with a military-style cut.

"It was more radical than this one," he said.

Mourinho remains confident of an about-turn in fortunes.

"I'm not adapting to losing. I'm adapting to the situation," he said.

On the contest with Maccabi Tel-Aviv, which comes in the week Arsenal travel to Stamford Bridge in the Premier League, he said: "A very big result is three points."