"I will talk to him, but we knew what was going to happen and I am certain he will remain a Bianconero until the end of the season," said Ferrara.
"There is always the January transfer window, but we won't need it in this case. The team is starting well and we are in a positive period of form.
"Having said that, we need to work hard and there is a long journey ahead of us, growing individually and as a unit. We need a contribution from everybody."
He added: "David is an important player and he will have space soon. He will no doubt reply with his usual talent. I am certain he'll have a great campaign, I'd bet on it without a second thought."