Napoli have hit back at Jonathan de Guzman over stunning claims made in the Dutch press.

De Guzman alleged the chief medic misdiagnosed a sports hernia, wouldn't allow a second opinion and refused surgery, while he maintains there was a brawl with director Cristiano Giuntoli after he refused a transfer to the Premier League.

“In response to recent comments made by Jonathan de Guzman to Dutch newspaper de Volkskrant, SSC Napoli would like to stress that his version of the events in question, which took place over three years ago, is entirely false," read a Napoli statement.

“The club reserves the right to protect its image and that of its employees via the appropriate legal channels."