Van der Sar has just 10 games left before breaking the 200 appearance mark for United.
He said: “The manager is planning to give Ben more games and I think that’s normal. You have to look to the future.
“He (Ferguson) has gone public and explained that as well. That has been the case for the last couple of years.
“But of course you want to play the majority of the games and I still want to play as many games as I can next season.
“I don’t know if this will be my last year, though. As far as making a decision, I am going to see how the season goes.
“There will be several factors to consider. Am I still enjoying it? Do the club still want me? Those kind of things I guess.”