Italian agent Claudio Pasqualin says Juventus are paying for a poor summer market.
He told TuttoJuve: "At Juve there is no memory, in the last ten years, of such a difficult moment.
"And it won't be easy to put things right. There are technical problems. Beyond the injuries and contingent misfortunes, the purchases have not been very centreed.
"Some figures have been overrated, especially from a tactical point of view. I cannot fail to mention Paredes and Kostic, who seem to me the emblem of disappointment with respect to expectations."