The loss has seen Juve's European hopes all but vanish.
"The team have gone missing," said Nedved. "We made ourselves heard in the newspapers more than on the field of play.
"We weren't lacking just a bit of character, but all of it.
"The new players haven't understood what it means to play in this shirt, while the older players have forgotten.
"The anger that we are feeling is normal because the results have been very disappointing. Now we have to work on the future."