Antonio, who has a podcast where he regularly shares his opinion on the game, chose to single out Kobbie Mainoo for praise.
The teenager has played for United's first team regularly this term, while also getting an England cap.
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On Mainoo, Antonio told the Footballer's Football Podcast: "He is frightening, he is actually frightening.
The craziest thing is that when they came to us at the beginning of the season, I didn't know much of these players like and this was United, but when he played against us I was like ''his kid is something special'.
Then I was like where did they sign him from? They had to have signed him, this guy was a joke, but he came through the academy, this kid is something else."