The defender is expected to join Barcelona when his contract expires in June.
Tuchel said today: "No concerns. Maybe it is a big more challenging for him that normal in a moment where everything is clear. But maybe he cleared his future. I don't know it yet, but for me it is very clear when I had conversations with him last summer and through winter.
"The bottom line was that as long as he is my player, I will not expect anything less than 100% commitment. This is what I demand for him. That he was out Saturday was nothing personal, just a tactical choice. He is our player and we want to have the most of him. He needs to be focused. This is his job and it's what we expect."
Tuchel added: "You can't take these things personally. If he decides to continue his career somewhere else, we will understand it even if we do not agree."
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