The Gunners failed to fire at Old Trafford last Wednesday night and were more than fortunate to leave only one goal down, after being torn apart during the opening exchanges as John O'Shea put United in the driving seat.
When inspired goalkeeper Manuel Almunia was finally beaten again, Cristiano Ronaldo's 25-yard strike came back off the crossbar while Ryan Giggs was denied a goal on his 800th appearance by an offside flag.
At the other end, Arsenal - utilising a five-man midfield missing cup-tied Russian playmaker Andrey Arshavin - failed to really stretch the United backline, as England winger Theo Walcott's threat was nullified by the clever deployment of Wayne Rooney on the left side of a front three.
Nevertheless, as his team trail by only one goal, all is not lost and Wenger is confident Arsenal can show their true attacking potential on Tuesday night.
The Gunners have yet to concede in the Champions League this season at Emirates Stadium, where they remain unbeaten over 90 minutes in European competition.
"We were unable to penetrate and create clear-cut chances, which is the one regret of the night, but the positive is that Manchester United had chances to win by more than one," Wenger told Arsenal TV Online.
"The midfield and strikers did a tremendous defensive job, but lacked a bit of sharpness going into the final third.
"I believe our midfield played a bit deep to give complete support, which created an isolation.
"The midfield had a feeling that there were not enough solutions in front of them and the strikers that they had not enough support - both are right and that happens sometimes in games."
Wenger maintained: "We feel we will perform better on Tuesday night and are still completely in it.
"I do not say we are happy with a 1-0, because you can never say that you are happy after a defeat, but we are still only at half-way and at the Emirates, we have a good opportunity to beat them."
Arsenal have improved over the last three months of the campaign, and in the Premier League at Emirates Stadium, their rearguard has not been breached since the Liverpool game on December 21.
United were beaten 2-1 there back in early November, and Wenger is keen to make the most of home advantage.
"We have a good defensive record at the Emirates, and in the Premier League Manchester United have suffered in away games," the Arsenal manager said.
"We can have an attacking style at home without conceding goals, and that is what we want on Tuesday night.
"I believe in the strength of character in this team and there desire to go through - that will certainly be a huge motivation."
Defender Bacary Sagna feels Arsenal have to use the lessons of their Old Trafford capitulation.
"We will be playing in front of our own fans and have to play our own game, not worrying about the other team," the French full-back.
"We do not need to think about the scoreline, just putting them under the same pressure as they did to us at Old Trafford."
When inspired goalkeeper Manuel Almunia was finally beaten again, Cristiano Ronaldo's 25-yard strike came back off the crossbar while Ryan Giggs was denied a goal on his 800th appearance by an offside flag.
At the other end, Arsenal - utilising a five-man midfield missing cup-tied Russian playmaker Andrey Arshavin - failed to really stretch the United backline, as England winger Theo Walcott's threat was nullified by the clever deployment of Wayne Rooney on the left side of a front three.
Nevertheless, as his team trail by only one goal, all is not lost and Wenger is confident Arsenal can show their true attacking potential on Tuesday night.
The Gunners have yet to concede in the Champions League this season at Emirates Stadium, where they remain unbeaten over 90 minutes in European competition.
"We were unable to penetrate and create clear-cut chances, which is the one regret of the night, but the positive is that Manchester United had chances to win by more than one," Wenger told Arsenal TV Online.
"The midfield and strikers did a tremendous defensive job, but lacked a bit of sharpness going into the final third.
"I believe our midfield played a bit deep to give complete support, which created an isolation.
"The midfield had a feeling that there were not enough solutions in front of them and the strikers that they had not enough support - both are right and that happens sometimes in games."
Wenger maintained: "We feel we will perform better on Tuesday night and are still completely in it.
"I do not say we are happy with a 1-0, because you can never say that you are happy after a defeat, but we are still only at half-way and at the Emirates, we have a good opportunity to beat them."
Arsenal have improved over the last three months of the campaign, and in the Premier League at Emirates Stadium, their rearguard has not been breached since the Liverpool game on December 21.
United were beaten 2-1 there back in early November, and Wenger is keen to make the most of home advantage.
"We have a good defensive record at the Emirates, and in the Premier League Manchester United have suffered in away games," the Arsenal manager said.
"We can have an attacking style at home without conceding goals, and that is what we want on Tuesday night.
"I believe in the strength of character in this team and there desire to go through - that will certainly be a huge motivation."
Defender Bacary Sagna feels Arsenal have to use the lessons of their Old Trafford capitulation.
"We will be playing in front of our own fans and have to play our own game, not worrying about the other team," the French full-back.
"We do not need to think about the scoreline, just putting them under the same pressure as they did to us at Old Trafford."
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