If Delia had billions, this subject would never be broached.
Delia and MWJ have given time, money, blood, sweat and tears for this club. They've made their mistakes - but they have taken us from a club about to go bust to a club about to be promoted again (the fourth time in their time at the club?) to the Premier League, relatively debt free with a squad arguably with more talent than ever before.
No one wants or should want them to sell. And they would be absolutely right to set high standards that a potential new owner would need to satisfy to get them to the table.
My only criticism is I suspect they would not sell the club in any circumstance, and if that is the position then this is wrong. If the right buyer comes along, they should sell.
The truth of the matter is, if and when Delia and MWJ leave this club, they (and Justin Fashanu in my opinion) should have a statue made in their honour.