Thorpe was a late substitute in the 2-1 win.
Thorpe told MUTV: "Obviously I was delighted to get on and hopefully there is more to come. I was very pleased, being a United fan and having been here from such a young age. To come through and get my first-team debut, I was very happy.
"You can see a few lads making their debuts this season and the ones who have been in the team have done really well. As soon as you get a little bit, you want more and hopefully there will be."
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