Correct, while they can suck the profit out, they're not selling.
Now for anyone to give them a price that makes it worth them selling, they'd be looking upwards of 5 BILLION ! Chelsea just sold for 2.5 PLUS an extra guarantee of 1.5 in 'extra' investments. And the Chelsea buyers don't inherit a debt ! and have a better quality squad at this moment in time.
Nobody is buying a mid-table team that needs significant investment, is carrying almost 1/2 a billion in debt, and needs a new stadium .... and will not be able to do it as a leveraged buyout (like the Glazers did).
Unless they get lucky with youth, player aquisition and Ten Old Hags, resulting in a top four finish, they're well and truly F.U.C.K.E.D