Clark knows he faces a huge test this term.
"It's a big season for me, no doubt," he told the Birmingham Mail.
"I have played in several positions over the past few years and I certainly haven't complained about that because I've loved being part of it and playing wherever I have been required to help the team.
"But this season I am looking to push on and try and nail down a spot. Hopefully it will be at the back. That's where I have been playing in the pre-season games and where I learned my trade.
"I am looking to get in and play more games than last season and make sure I have a better season."