Tuchel has played down reports of interest in Halaand and Upamecano.
Borussia Dortmund may be forced to sell their star striker if they failed to qualify for the Champions League this season.
On the other hand, Dayot Upemacano will be allowed to leave RB Leipzig for £38million.
But Tuchel insisted that he won’t be talking publicly about future signings for the sake of his own club and his players.
Tuchel told ESPN: “I can understand your interest in that question and I can understand the interest of every fan and supporter to talk about these subjects.
“I am also always a fan and interested in what is going on. But now is February. There is a long way to go. As you know me or maybe get to know me better, I will not talk about other players publicly when they are under contract.
“This is the kind of respect we show to them but show first of all to our players. We think about our central defenders and our strikers first and we push them to the limits. Everything else will be decided behind closed doors.”