Man Utd keeper Van der Sar wants to retire FA Cup winner
Having won the Champions League, three Premier League titles, the Carling Cup and the FIFA Club World Cup since joining United in 2005, the only domestic medal van der Sar is missing is the FA Cup.
And Steele revealed a Wembley triumph on May 14 would be the dream way for van der Sar to bring the curtain down on his career.
"Ed hasn't won it and that's a big target for him," said Steele. "He's won most things in the game, there's not much left he hasn't.
"When we rotate our goalkeepers I think you will see Mr Van der Sar knocking on the door and asking the boss to play in the FA Cup."