Man Utd keeper Van der Sar cannot write-off Arsenal title challenge
Chelsea's surprise defeat at Everton allowed United to move within a point of the leaders with 12 games remaining, one of which is what looks a hugely important clash of the top two at Old Trafford on April 3.
"There is a little bit of a gap between us but Arsenal are still around," said the Dutchman.
"But really, we are not looking to anyone else.
"We will concentrate on ourselves and hopefully we can continue this workrate and quality of play we have shown in the last couple of weeks."