The Swans recent form has dipped following Williams' ankle injury with the South Wales outfit losing three of the four games he has missed.
"Ash is an important player for us. He has been a consistent and regular player for us week in, week out," he told the South Wales Evening Post.
"He will be fit when we come back. How many Premier League games did he play in a row without a rest?
"Ash has not had many injuries. Hopefully he will get back to full fitness, get back in the team and help us."
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