1 more year of Cuadrado would be good if it allows for the team make other necessary signings. He isn't really a problem.
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This got me thinking, which Atalanta players left Gasp and kept, or exceeded, their level of play?
Kessie is the first one that comes to mind, probably the one that kept his level the most. Romero can also be there although I don't think he is quite as good as he was at Atalanta. He is a bit overrated imo. Spinazzola was also one who simply got done by injuries, his level is great otherwise.
For me the most difficult to rate positions of Gasperini's Atalanta are the CB in the middle of the 3, the attacking midfielders, and the wingbacks. His system makes tactically smart players in these roles look amazing because they are "just" exploiting results of his tactics. It's a bit like with Pep or with Conte.
So if one signs a midfielder or wingback from Atalanta I would forget about their goal contributions and really have to look closely at the attributes of the player, because those goal contributions aren't going to translate to our system.