The agent of Napoli midfielder Marek Hamsik says they've opened talks over a new contract.

George Venglos revealed yesterday that negotiations have commenced over extending the Slovakia star's current deal.

"The topic of conversation between myself, the chairman De Laurentiis and director general Riccardo Bigon was about the renewal of the contract of Marek," he said. "The current contract ends in 2013.

"The interest is mutual, we hope to extend until 2014 or 2015, the conditions will be improved.

"Neapolitans would be happy if he could sign the new contract before the World Cup."