USA goalkeeper Guzan admitted a desire to play first-team football was behind his decision to part company with Villa after discussions over a new contract.
He told the Wolverhampton Express and Star: "For me, my first and foremost priority is sorting out my club situation because at my age I need to be playing games.
"I want to be playing games and I think I've proven, not only to myself but to my team-mates and to coaches, that I can play at the highest level and if given the opportunity I can play well.
"When you get that taste of first-team experience you want more of it, and for me, going back to a back-up role was frustrating. It was definitely frustrating.
"At the top level you may only get one chance and when you get that chance you have to take it.
"Fortunately for me, I think I was able to when I came in and now hopefully I'm able to reap the benefits in terms of going somewhere and getting a starting spot."