The midfielder was named in the U20 squad this week.
"I was quite surprised with him being in the Under-20s, I thought he'd be pushing for the Under-21s, his performances have been that good," said Bardsley.
"His performance last week, especially against Liverpool was outstanding, he was probably our best player.
"His performances are growing and he is as a person as well.
"If you see the other players who are in, (Callum) Hudson-Odoi and (Phil) Foden in the under-21s, I think Dwight deserves to be in there with them."