Sir Alex Ferguson believes a more attacking Manchester United will overcome Barcelona in the second leg of their Champions League semi-final next week.
The two sides battled out a goalless draw in Wednesday's first leg at the Nou Camp in a match in which the home side dominated possession.
The Red Devils could have stolen an away goal through Cristiano Ronaldo's missed third minute penalty, but Ferguson was pleased with the scoreline and also his side's position in the tie.
"When you get the result, you have to look at the plus points and there were some plus points," he said.
"Nil-nil in the Nou Camp is not a bad result.
"We sealed off the areas where teams don't normally do well against Barcelona. They didn't make a lot of chances.
"Going to Old Trafford at 0-0, we have a marvellous chance.
"On the negative side, we should have done better with possession. We had opportunities to counter-attack but gave the ball away too easily.
"The way they play they always have an extra man in midfield so possession is always going to be in their favour.
"You have to show patience and quality and Barcelona have that, but we had the answers.
"At Old Trafford we have to impose ourselves more and I think we will."