The Republic of Ireland assistant coach believes there remain weaknesses in Juve's team.
"I think the signings have been good," the 58-year-old told Tuttosport. "Carlos Tevez, as the Argentine's impact on Italian football shows, is a high level buy.
"However, they are missing a midfielder and a centre-back," he added. "There is a lot of talk about the midfield, but, in my opinion, they are a man short at the back too.
"I hope Giorgio Chiellini can have an injury-free season, even if historically he is someone who visits the treatment room."
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