Butland conceded 28 goals in 16 appearances as Leeds saw their Championship play-off hopes vanish during a depressing finish to their season.
"He's had plenty to do," Hughes told The Sentinel.
"Leeds obviously have expectations and high demands on their players and that's what he will also get here in the Premier League, so it was important for him to play where there was that level of expectation.
"I have looked at the goals and you can't lay them at his door.
"He's still learning and it's been a difficult run for Leeds, but that's certainly not as a consequence of Jack."
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