The 20-year-old, who joined the Potters in January, was unlikely to see any first-team action at the Britannia Stadium with Asmir Begovic considered the number one.
"It was always our intention to get Jack Butland out on loan, it was vitally important to get him out to allow him to continue his development," Hughes told reporters.
"He is an outstanding young talent and someone we have incredibly high hopes for. We will keep a close eye on him and he will come here on certain days to maintain the work he has been doing with us.
"It is a good move for him and he will learn a lot from it. He has the potential to be the next England keeper."
Butland made his international debut in a 2-1 win over Italy in Berne last year.