Why don't they just sell them on to someone who wants them?
Maybe the small fact that no airline can afford to take the risk of expanding their fleets at this second.
That and they can't until the creditors have decided to what to do with them, providing the company owns the aircraft. It they are leased, then they will go back to the leasing company, checked over and leased out again providing someone wants them............unlikely with the 737-300. Which then makes me ask where the Daily Mail gets it's information from. A 737-300 at $35 million, more like $3,50

You can pick up a second hand 757 for $12 to $15 million.
I have three 737-300's sat outside the hanger I work in. We are getting them ready to return to the leasing company. Surplus to requirements and hight mileage. The 737 Classic is slowly getting ready to depart from this world and if you watch Discovery Channel, be turned in to mobile phones and Audi's. Saying that, one or two may end up on Mythbusters
Matt