It's the wages though. Their stock is so low for the clubs interested that wages become an issue.
I remember when we were trying to get rid of Jansen and I asked a Celtic supporting friend of mine why wouldn't they take a punt on him, he'd been successful in the Netherlands. He said his wages of £35k/PW blew their top earner out of the water by 10k.
Yeah, I think the wages are the problem. Especially since many of these players, who although are deemed virtually worthless to us now, were highly rated and brought in for big money at the time we purchased them: The likes of Ndombele, Lo Celso, Reguilon, and even Dier and Sanchez are probably all on relatively high wages and are unlikely to accept pay cuts to move.