The agent of Marek Hamsik says the midfielder could stay for life at Napoli.

The midfielder is being watched by Manchester United and Real Madrid.

"At this moment, Marek is extremely concentrated on the rest of the current campaign," agent Juraj Venglos told Radio CRC.

"He is very tied to the Azzurri and is not interested in other clubs. Hamsik wants to build his future at Napoli, quite aside from what international competition they will quality for.

"I just want to reiterate that all transfer gossip around him is invented by newspapers and television. In fact, it is possible Hamsik could stay at Napoli for life."