The 20-year-old's form earned a recall to the England squad, with Thomas Tuchel giving him minutes against both Uruguay and Japan.
Speaking exclusively to club media, when answering questions sent in by United fans, Casemiro was asked for his thoughts on Kobbie's game, and supplied a detailed, and effusive, response.
"Kobbie is the present and the future," said the Brazil international. "I think that he is one of the best no.8s and can be for that for the next 12 years.
"He is a player I really like. He always wants the ball. It is true that football can’t change your mentality but Kobbie demonstrated that he hasn’t changed his focus once.