'Wenger is a specialist in failure': Mourinho sparks new war of words with Arsenal boss.

Chelsea boss Jose Mourinho sparks new war of words with longtime rival Arsene Wenger

Says the Arsenal manager is a 'specialist in failure'

Portuguese boss said he would 'not come back to London' if he had gone eight years without a trophy

Mourinho was responding to Wenger's earlier claims that managers who play mind games do so because of a 'fear' of failure.

Jose Mourinho called Arsene Wenger a 'specialist in failure' on Friday as relations between the two managers hit a new low.

The latest eruption in their decade-long feud was sparked by Mourinho’s exclusive interview in Friday’s Sportsmail, in which the Chelsea boss claimed Arsenal would have no excuses if they fail to win the Premier League because their manager had been building his side for eight years.

Wenger hit back immediately, accusing Mourinho of being scared to admit Chelsea are genuine title contenders because he has a ‘fear of failure’.