Ahead of today's clash with Mainz, Kompany reflected on the impact of the 17 year-old.
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He said, "If you score as many goals as a 17-year-old, not everything is normal. However, everything is fine with his mental and physical development.
"He will also be able to handle the pressure well in the future. I think he has the right profile."
So far this season, Karl has made 20 appearances, scoring five goals and making two assists.