Tuchel says the Brazilian will be out until after the next international break.
He will miss Ligue 1 games with Nantes and Rennes, either side of a Champions League trip to Germany to face RB Leipzig.
“I don’t think it’s possible he will play [for Brazil],” said Tuchel.
“If he plays that means he’s not injured, and that’s a bad message. The news for me is that he will return after the break.”
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