The duo has been linked with moves away from the club in recent months.
Bigon told Radio Marte: “There is time for renewal of Paolo Cannavaro’s contract.
“We have confidence and esteem in the player. Paolo is a serious guy and very attached to the jersey.
“There is no exact date for a renewal. There is time and soon we will all get round a table to talk about it.”
On Hamsik, he added: “I’ve read rumours that Bayern Monaco are interested in Marek Hamsik.
“The boy has a contract until 2014 and I’m sure we will announce his renewal.”