Chelsea manager Jose Mourinho has described Arsene Wenger as a "specialist in failure", reports The Guardian.
The Arsenal manager in his press conference claimed that Premier League managers were playing down there chance of winning the title because they "fear to fail".
This lead to the Special One hitting back at the claims made by the Frenchman.
Mourinho said: "He is a specialist in failure, I am not. If he is right and I have a fear of failure it is because I don't fail many times. So maybe he is right?
"The reality is he's a specialist because eight years without a piece of silverware, that is failure. If I did that in Chelsea I would leave London and not come back."
The Portuguese manager is in charge of Chelsea for the second time after being the manager between 2004 and 2007, which saw the club win successive titles for the first time in their history.
Mourinho then went to Inter Milan where he won the treble in 2010 and after that he led Real Madrid to the title in Spain in 2012.
Arsenal won their last trophy in 2005 when they beat Manchester United in the FA Cup in a penalty shoot-out.
Wenger has yet to win a trophy since then with the closest time coming when they lost 2-1 to Barcelona in the Champions League final in 2006, and 2-1 to Birmingham City in the League Cup final in 2011.
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