Napoli could be without Mario Rui against Udinese on Sunday after the left-back reportedly suffered an ankle injury in training.
Sky Sport Italia adds there is no more information at this stage, although it is enough to put his availability this weekend in doubt.
Rui missed the majority of last season with damaged knee ligaments and had been only recently been eased back into action by the Partenopei.
If the Portuguese cannot play, Maurizio Sarri is likely to continue with Christian Maggio at right-back and Elseid Hysaj covering on the left.
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