Juventus are not thinking about the January transfer window. They are looking ahead to summer 2020 and they are targeting two free agents.
Two important players in Christian Eriksen and Willian have not signed new contracts at their respective clubs so they will be free agents next summer.
According to 'TuttoSport', the Tottenham footballer is their main footballer and they are trying to negotiate with him as soon as January arrives. From then on, he will be able to do so with whoever he wants.
It is worth pointing out that the Dane was also Real Madrid's target during the last transfer window. This means that, even if he is a free agent, signing him will not be easy.
On the other hand, the Brazilian is still a highly regarded player and for sure a large number of teams are waiting to pounce once 2020 comes along.