The 20-year-old midfielder is on an initial six-month loan from Norwich and made his debut as a substitute against Colchester.
"You could see he's a very young player but he's so composed," said Rosler.
"He's a great kid, his attitude is spot-on, he has worked very hard to come back from an injury.
"That was his first game at this level (this season), he had a couple of development games. He will be very competitive in our midfield."