Brown told instantcasinos: "He's so sharp he's like a little whippet! The energy that he brings when he comes on makes me want to see a lot more of him on the pitch. The way he tracked back and defended too against Liverpool in those big moments was really impressive and then he goes and scores the winner.
"As a fan he's what you want to see, especially from such a young player, and I'm hoping we see a lot more of him. The energy and quality he can bring to the field in a game of high emotions and pressure against United's biggest rivals is such a big achievement for a player of his age.
"It's exactly what you want to see from the youth players coming through."
