De Rossi's contract situation is reaching the critical stage.
"I am sure that the agreement will be reached."
Meanwhile, with some questioning the signing of goalkeeper Maarten Stekelenburg, Sabatini added: "Maarten for us has been a primary goal, but we were not sure until we signed him.
"There were also others considered, like Romero and Kameni. We are pleased to have signed the Dutchman. He will leave a mark in the history of Roma."