While van der Sar is posied to put pen to paper on a two-year deal at Old Trafford, moving for an undisclosed fee, Fulham have wasted no time in trying to recruit a replacement.
Green's agent admits it's a possibility his client could remain in the Premiership despite Norwich's relegation.
However, with so many clubs chasing the England international, it's by no means certain that Craven Cottage will be his next destination.