It makes little sense for Tiago especially, to remain at Juventus when there seems such limited chances of him playing in the first XI. The world cup arrives at the end of next season, and both Poulsen and Tiago, surely need to be playing, in some way regularly, to cement their places in their national teams.
I can believe that Poulsen has some determination to prove that he can be an asset in Serie A because much of his game, and i assume therefore, his character, is rooted in tenacity. But Tiago...he has had far longer to prove himself, something more than the pallid ghost of his former self at Lyon and Chelsea. With the signing of Diego, and perhaps also D'agostino, as well as the continued improvement of Marchiso, the section of the park where Tiago could be deployed has become overcrowded. he can play centrally, or slightly more forward. And these positions are taken, without any doubt, by more useful players.
poulsen on the other hand, has more chance of playing, as the number one backup to Momo and Marchisio. I am ommitting Zanetti, as I don't think his body is going to hold together for much longer.