The 47-year-old orignially faced an eight-month ban and had it shortened to six on appeal, but the punishment has been reduced even further, resulting in Alessio being able to be involved in the top-of-the-table clash after the international break. Juve and Napoli are tied atop Serie A with 19 points apiece, with defending-champion Juventus owning a slight edge on goal differential.
The Italian's sporting arbitration court, the TNA's, made the decision regarding Alessio on Friday, only a week after Juventus coach Antonio Conte has his own 10-month ban reduced to four. Both their bans were of the result of not reporting alleged match-fixing while at Siena two years ago.
Massimo Carrera, another member of the Juventus backroom staff, continues to oversee the Bianconeri's long unbeaten record, which stands at 47 matches.
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