Guzan spent two spells on loan at Hull in 2011 as he played second fiddle at Villa and admitted it was good to be back.
He said: "It was brilliant to come back to the KC Stadium. The reception the fans gave me was fantastic and it was brilliant to see some faces from when I was here, so it was good.
"When I was here, the fans, the entire club, the outlook was always to get back to the Premier League, so hats off to them because it's never easy when you're in the Championship to get promoted."
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