Villa earned a vital 1-0 win at Crystal Palace last night.
Of the Keane news, Guzan recalled: "We came in and then we found out about it at training. We didn't know it was happening or anything like that.
"Now it's time for us to crack on and make sure we do our job as players and that's get results like at Palace.
"Any time people leave the club it's a time for the rest of us to rally together and I think our performance at Palace showed that."
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