Chelsea boss Jose Mourinho has mocked Arsenal counterpart Arsene Wenger as the Blues prepare to play Manchester City on Sunday.

City boss Manuel Pellegrini signed a new contract recently after finishing a second in the league last season.

When asked if he was surprised by the deal, Mourinho said: “Why? Some other clubs, they have disappointed for 15 years and the manager is the same.”

Arsenal last won the Premier League under Wenger in 2003-04.

But the Frenchman, who has been in charge of the Gunners since 1996, has led his side to FA Cup victories for the last two seasons.

Wenger also achieved victory over a Chelsea side managed by Mourinho for the first time in 14 attempts when Arsenal won the Community Shield in this season’s curtain raiser.

There is a history of conflicts between the pair, with Mourinho claiming Wenger was

“a specialist in failure”

in February last year, while the Arsenal boss has previously accused his Chelsea counterpart of being “disrespectful”.

Meanwhile, Mourinho says Sunday’s game with Manchester City is not crucial at this early stage of the Premier League season.

The reigning champions head to last season’s runners-up on the back of a

2-2 home draw

with Swansea City in their opening game.

“I cannot say it’s crucial, it’s decisive, or it’s very, very important,” said Mourinho.

“But it is two title contenders, and three points.”

Manchester City won the title in 2013-14 before finishing eight points behind the Blues last season.

But Mourinho has played down the significance of this weekend’s encounter, with the season just one game old.

“The season is very long. Thirty-eight matches is an eternity, a marathon which started last week and ends in around 10 months,” he added.

“If you can get three points and your opponent zero it is important.

“But for sure I am not going to say the game decides anything for the winner or anything for the loser.”

While Chelsea were held on the opening weekend, City comfortably

beat West Bromwich Albion

away 3-0.

The City and Chelsea bosses have a rivalry that dates back to when the Portuguese succeeded Pellegrini as Real Madrid boss in 2010 and made unflattering comments about his Chilean predecessor.

They

did not shake hands

after their first meeting in England in October 2013.

But Pellegrini said on Friday: “I said the first day I arrived here I have my differences with him but I always shake hands with him.”

As for the significance of the game, the Chilean added: “We are not thinking about the title in the second game.

“But we are thinking about trying to win our points at home, especially as we are playing against the champions and one of the teams that has a lot of chances to win the title.

“It is the same as Manchester United, Arsenal, Liverpool, Tottenham – all the big teams.”