Barcelona head coach Ernesto Valverde insists Napoli will be dangerous opponents in the Champions League last 16.
The Catalans were pitted against the Serie A side in Monday's knockout-stage draw in Nyon, with the first leg to take place at the San Paolo on February 25.
Napoli have endured a tough season domestically, their 2-1 loss at home to Parma on Saturday leaving them in eighth place, 18 points off leaders Inter and Juventus.
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Despite some poor league results, which led to Carlo Ancelotti's departure as head coach and the appointment of Gennaro Gattuso, Napoli finished Champions League Group E unbeaten and are the only team to have beaten holders Liverpool in any competition this season.