There was a Swedish talkshow discussing him yesterday and I think they made a fairly good point. It is Berardi's second season playing in a first team and even if he seems to be rather mature, perhaps it would be better to give him a third season at first team level before taking him to his future nest. If Sassuolo does not manage to stay up in Serie A we should buy him back and loan him out, unless Sassuolo is willing to loan him out (which I doubt unless they see future $$$$ in it). Give him proper time to grow the mental aspects as well before pressuring him too hard.