If people are criticizing the club/Paratici for not being able to unload deadwood players, then the assumption would be is that there are clubs who would be willing to take them but we just won't do it.
If there are no takers, then it doesn't make sense to criticize our inability to offload players.
Because you have an asset who, for most instances, can still be called on to perform if needed, and you also don't obtain ANY value for the player.
Let's say that Aurier is worth 25 million. You'd be better off selling him at a cut rate of 10 million than just paying out the rest of his contract and let him go free. We aren't playing FIFA career mode or playing with monopoly money.