We tend not to sell our best players; we usually only sell the failures. The successes we keep until they are old.
If we make money on Bellamy, we'll have done okay out of that signing.
We may yet make a few bob on Crouchy if he goes.
Alonso would cost way more than the £10m we paid for him, while Sissoko may yet leave for a big profit.
The most disappointing failures I think were a number of houllier signings (Cisse / Diouf / Diao / Cheyrou) where we lost a big bit of money.
Rafa's failures have tended to be at the cheaper end (with the notable exception of Morientes).