Former Italy coach Arrigo Sacchi was unimpressed by Napoli for this week's defeat to Inter Milan.
The result has reopened the Scudetto race as Serie A resumes.
“Napoli weren't their usual selves in that match," Sacchi argued.
“Now they'll have to find the compactness and the mechanisms in possession that served them so well before the break again."
Asked if Inter and Milan can get back into the Serie A title race, he replied: “Yes, if they can get back to playing as a team."