Dutch veteran keeping missing honour out of his mind as the Red Devils look to triumph over Manchester City in semi-final at Wembley on Saturday
The 40-year-old shot-stopper who will retire at the end of the season, and is still missing an FA Cup medal from his collection after United's last final in the competition ended in disappointment after tasting defeat at the hands of Chelsea.
However, the experienced Dutchman knows this is not something to dwell on as he looks to focus his mind on the clash against their local rivals.
"An FA Cup medal is missing from my collection but I am not going into the game more focused or tense because of that," he told reporters.
"At the end of tomorrow's game there is no medal or honour. It is just a semi-final.
"Obviously, it would be a great achievement to reach the final and give ourselves a chance of winning the tournament but at the moment I am not that bothered."
Van der Sar has made just one appearance for United this season in the FA Cup - in the 2-0 victory over Arsenal - in the quarter-finals and looks set to make successive starts and begin the game at the weekend.
The former Fulham man accepts that Roberto Mancini's men have become more of a formidable force since his days in west London, but also recognises the level of quality in his own side.
"The derby has always been good," he added.
"But it is a little bit more emphasised now because of the money that City have been spending in the last few years and the quality players they are bringing in.
"Maybe for them, the game is not played with the heart quite so much and more with their quality players.
"We have plenty of them as well though and hopefully they can make a difference for our team as they have done in the last couple of games."
He added: "We are a good team and we challenge for honours virtually every year," he said.
"That is why we have quality players who will push us towards ending the season with a trophy or a big prize.
"It is almost normal that you come to days like this. Then it is the case of finding your form to make it count."