The agent of Andrea Dossena admits he doesn't know why the fullback left Napoli for Sunderland.

The defender signed for Sunderland on deadline day.

"He left Napoli without a real reason, but these things happen in football. It was a mutual decision," Roberto La Florio told Radio Kiss Kiss Napoli.

"He was the first real signing of the Riccardo Bigon era, as the director came to Liverpool to get him. Napoli weren't the only option at the time, as Zenit also made an offer, but he chose Napoli.

"This marriage started very well, but then things changed. There is no problem with the Azzurri, though."

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