Lewis signed for the Bantams last month.
The goalkeeper told the Daily Echo: “Of course, the goal was always to play for this club. I think it's a great club and I'll always hold it dear to my heart. But, unfortunately for a few different reasons it didn't materialise. And that's fine, you know, football, everyone's entitled to their opinion and in football things happen. But for me, I'm just looking forward to going out and enjoying football again. And showing people what I can do.
“You can't come on for 10 minutes at the end of the game and have a good go of it like players in other positions. Only one of you can play and there's there's been some really good goalkeepers during my time at the club. And unfortunately, for me, I didn't get the nod. But I've been lucky enough to work with some fantastic keepers and I'll be able to take that experience with me where I go next, which is good.
“When a Premier League club comes knocking, that's very exciting. It was always my dream - and still is my dream - to be a Premier League goalkeeper and I still believe that I can get back to that level. But for me now, that all starts with playing well for Bradford City, and that's my aim for the short term at least."