Amad, 18, has already shown glimpses of what he can do, and made his senior debut in the 4-0 win over Real Sociedad on Thursday night.
"He's still so young but he's come into training and you can tell he's got confidence," United fullback Luke Shaw told Sky Sports.
“You can tell by the way he plays, his first touch is brilliant, the way he takes the ball and drives at players. He's got great skill.
"Of course, like I said, very and got a long way to go. But you can tell already he's going to be one for the future and I'm sure he's not far away from getting a first team appearance.
"He's a wonderful talent and already a wonderful player so I'm sure fans are looking forward to seeing him on the pitch."
Shaw also revealed how United captain Maguire had compared Amad with a young Mahrez from when the pair were at Leicester together.
He went on: "It was interesting because Harry said to me the other day that he reminds him of Mahrez when he was at Leicester.
“Really quick, skilful, agility, can turn really quick, got great skills and I would agree with Harry - he does remind me of Mahrez.
"Even the way Mahrez plays now I've seen the qualities that Amad already has and has shown in training.
"Mahrez is a wonderful player so hopefully if he's any good like him it would be great for United."