Juventus coach Claudio Ranieri says he hasn't asked his board for any new signings to be made in January.
He said: "I have not made any request to the club for the market in January. There are many jewels that we sent out on-loan to play.
"In the summer, I reluctantly allowed Marcelo Zalayeta to leave, a champion who is doing well at Napoli."
Juve president Giovanni Cobolli Gigli added: "I am not convinced we still have to buy. We still have Tiago."