Chelsea boss Jose Mourinho has opened a new battle with Arsene Wenger by describing the Arsenal manager as a "specialist in failure", as a response to the Gunners boss's latest quotes about the Premier League tittle race.

Wenger claimed on Monday that the title is Chelsea's to lose, despite Mourinho insisting several times that the Blues are in a transitional season and they are far from being the favourites to conquer the Premier League.

Asked in a press conference about his opinion on Wenger's quotes, the Portuguese boss said: "He is a specialist in failure. I'm not.

"If supposedly he is right and I'm afraid to fail, it's because I haven't failed many times. Maybe he's right. Maybe I'm not used to failing."

Furthermore, the Chelsea manager reminded Wenger that it has been eight years since the Gunners won their last trophy.

"The reality is he is a specialist. Eight years without a piece of silverware, that's failure.

"If I do that at Chelsea, eight years, I leave London and I don't come back. If Mr Abramovich gives me eight years, in eight years you have to build so much, so much, so much. I don't want eight years."

Chelsea, who face Manchester City on Saturday in the FA Cup, are currently leading the Premier League with Arsenal just one point behind while Manchester City are three points off.

Nevertheless, the Portuguese boss recently played down the Blues' chances of winning the Premier League this season, describing his side as the "little horse" in the race and making Manchester City, Arsenal and even Liverpool the real favourites.