Guzan has insisted that Lerner, who also owned the Cleveland Browns in the NFL for ten years, does not deserve criticism and has moved the club in the right direction.
"Randy has been a really good owner," the 29-year-old said in The Sun. "Despite where we are in the league, the club is in a better place than before he arrived.
"He understands the history and the passion of Aston Villa.
"You don't always see that, with Americans especially.
"He's built a beautiful training ground, improved the stadium and cleared the club's debts.
"To criticise him after spending upwards of £250million of his own money - that is extremely harsh."
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