Quansah, who left Liverpool for Bayer over the summer, made his full debut in the World Cup qualifying win against Albania.
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"Of course I have a lot of trust in Jarell," Tuchel said.
"I see his talent, but I see the package. He is tall, he is fast, he is strong in build-up. He is strong in the air.
"He plays every minute for Leverkusen since the Under-21 Euros, so he is at the moment a tiny bit ahead."
