Christian Pulisic has only recently returned from a lengthy injury layoff yet he has been called up by the United States for the latest international break, causing concern for Chelsea.
Thomas Tuchel made clear after the 1-1 draw with Burnley on Saturday that he was not best pleased with the news of Pulisic's call-up, and urged the national team to be careful with him.
"The answer is if you look at the minutes, the question is maybe answered," Tuchel said when asked if Pulisic could play a big part in the US' upcoming games.
"I hope that they don't overuse him and are responsible enough. Christian still feels some pain.
"It is a matter of pain management. It's not a matter of a re-injury or being still injured. It's just still painful. He has tried hard.
"He wants desperately to come back. We needed him back. It was a good start for him in Malmo. He had ten minutes [against Burnley]. We are a bit worried."
Tuchel also urged Pulisic himself to be cautious over his situation.
"Hopefully everybody, including himself, is responsible and doesn't get carried away by emotions and by helping his country to win a super important match.
"Hopefully it all goes well and the minutes will elevate him and he will come back stronger."