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Facts and figures ahead of Manchester United's Champions League semi-final first-leg clash with English rivals Arsenal at Old Trafford.
These two sides have never met in European competition before.
Manchester United have kept more clean sheets than any other side in the Champions League this season - seven.
Of the sides left in the competition, United have the best defence; conceding only five goals.
This will be the 38th time that Arsene Wenger and Alex Ferguson have met as managers. Wenger has won 14 and Ferguson has won 13 of the previous 37.
The away side has only prevailed once in the last eight meetings between these two teams.
Of the previous 14 all-English Champions League ties, the home side have only lost on two occasions.
Arsenal have not managed to defeat an English side in the Champions League before, in four attempts.
The Gunners have won just three times in their last 13 Champions League away matches.
Manchester United are unbeaten in 20 Champions League matches at Old Trafford.
The Red Devils are unbeaten in a record 23 Champions League games.
This is Manchester United's 11th appearance in a European Cup semi-final. Only Real Madrid (21), Milan (13) and Bayern Munich (12) have appeared in more.
Despite getting to the semi-final stages, United have only managed to win four of their 10 Champions League games so far this season.
Arsenal have been caught offside more than any other team in the Champions League so far this season - 42.
Denilson has had more touches of the ball than any other player in this term's Champions League - 938.
Eurosport
These two sides have never met in European competition before.
Manchester United have kept more clean sheets than any other side in the Champions League this season - seven.
Of the sides left in the competition, United have the best defence; conceding only five goals.
This will be the 38th time that Arsene Wenger and Alex Ferguson have met as managers. Wenger has won 14 and Ferguson has won 13 of the previous 37.
The away side has only prevailed once in the last eight meetings between these two teams.
Of the previous 14 all-English Champions League ties, the home side have only lost on two occasions.
Arsenal have not managed to defeat an English side in the Champions League before, in four attempts.
The Gunners have won just three times in their last 13 Champions League away matches.
Manchester United are unbeaten in 20 Champions League matches at Old Trafford.
The Red Devils are unbeaten in a record 23 Champions League games.
This is Manchester United's 11th appearance in a European Cup semi-final. Only Real Madrid (21), Milan (13) and Bayern Munich (12) have appeared in more.
Despite getting to the semi-final stages, United have only managed to win four of their 10 Champions League games so far this season.
Arsenal have been caught offside more than any other team in the Champions League so far this season - 42.
Denilson has had more touches of the ball than any other player in this term's Champions League - 938.
Eurosport