As his deal with the Biancocelesti expires in June, there are rumours he'll return to the San Paolo.
"Reja has postponed signing a new contract until the end of the season, but it is a pure formality and no need for negotiations on the economic aspects," assured agent Marko Naletilic on Radio Kiss Kiss.
"I am surprised by this news, as there has been no contact. He is happy at Lazio and just wants to renew his contract.
"I never spoke to Napoli about him, although obviously I can confirm the club and the city have a special place in his heart. He has wonderful memories of his experience with the Partenopei, but there is nothing new to discuss."