Magpies Head of Youth Mick Leonard admits United are following the 18 year-old.
He told the Nottingham Post: "Man United have been looking at him for a long time. There were also scouts from Man City and Tottenham at our youth game against Doncaster last week and Arsenal watched him when he was out on loan at Lewes.
"He's as good as any young goalkeeper I have seen and I wouldn't be surprised if any of the big clubs did want him. He can go all the way if he keeps working as hard as he is now. He has got so much potential."