Mourinho pays tribute to his old rival Wenger

FILE PHOTO: Soccer Football - Chelsea v Arsenal - Barclays Premier League - Stamford Bridge - October 5, 2014 Chelsea Manager Jose Mourinho and Arsenal Manager Arsene Wenger clash Action Images via Reuters/Tony O'Brien/File Photo

(Reuters) - Jose Mourinho once called Arsene Wenger a 'specialist in failure' but on Friday, after the Arsenal manager announced he was stepping down at the end of the season, there was only respect.

Asked by reporters whether he regretted some of his behaviour towards the Frenchman over the years, the Manchester United boss suggested the question betrayed a lack of understanding.