Struggling Napoli sacked Walter Mazzarri on Monday and brought in Slovakia coach Francesco Calzona just two days before hosting Barcelona in the Champions League.

The 62-year-old Mazzarri became the second man to be sent packing this season by the ailing Italian champion.

Mazzarri took charge in November after Rudi Garcia was dismissed but Napoli then fell to ninth in Serie A ahead of Wednesday's last-16, first-leg clash with Barca at the Stadio Diego Armando Maradona.

"I thank Walter Mazzarri, a friend of the De Laurentiis family and Napoli, for having helped the team in a tricky period," said Napoli owner Aurelio De Laurentiis on X, formerly Twitter.

De Laurentiis confirmed that Calzona has been hired, reportedly until the end of the season, and will be in charge on Wednesday night.

Calzona guided Slovakia to Euro 2024 but has a huge job on his hands as he returns to Napoli, where he was an assistant under Maurizio Sarri and during Luciano Spalletti's trophy-less first season with the club.