Robbo believes the 19-year-old will be one of the first names on Sir Alex Ferguson's teamsheet for today's Old Trafford Mancunian derby.
He told the Sunday Express: "I don't think all this talk is too much for him because he is a mentally-strong kid.
"Things don't faze him. The one thing I would say is that he is a Manchester United player but I wouldn't get carried away.
"Let the lad develop. Let's see where he is when he is 22, 23, when he has got experience and has done it year in, year out before starting to compare him to someone like Duncan Edwards.
"People like to do all this and then knock them down if they don't reach the expected heights.
"A good start is that he has real mentality. He has got great stamina. He is strong, quick and he is also brave. He has loads of attributes."