If Earl wants his cash back, he has to wait until the club is sold under a fair market valuation. Unless he has some compromising photos of Kenwright (now that might not be so unlikely...!), the Luvvy is not going to allow player sale proceeds to repay a shareholder who wants out. Earl needs to find someone who's willing to replace him as a shareholder and commit capital if he wants out.
And to all those suggesting we sell players to 'clear our debt' - that is simply not how it works. Football clubs, as all businesses, run on debt. You have to get the debt level right, but you don't eradicate it. It's a liability that funds your assets, and that's how the balance sheet balances (I know I'm over simplifying here but just to make the point). If we have now reduced our debt and the cost of servicing it to a level we can foreseeably afford through our revenues, then there is no specific pressure to sell further assets. We all know that if an offer comes in that can't be refused - and I'd call that something like £30mill now for a 17yr old with massive POTENTIAL - then we'd be stupid not to consider.
The alternative - glass-half-full - view is that our key players take a look around at what is developing at Everton, and the massive POTENTIAL that the whole team has in the next 2-3 years if the youngsters stay together, and decide this is the best place to be to win things (bit like ManU 10 years ago which prompted Hansen's famous foot-in-mouth 'you won't win a thing with youngsters' quote). Wishful thinking like, but if I were Moyes that's what I'd be selling them, every single day...