Clarke said: "I haven't thought about it (my contract) to be honest. The only thing I'm thinking about right now is helping to keep Sheffield Wednesday in the Championship.
"We have another big game coming up on Tuesday at West Brom and, obviously, they're a very good side.
"They will come at us and play some good football but the manager will have us very well prepared."
Clarke has struggled to hold down a place in the starting line-up this season with Marcus Tudgay and Luke Varney, on loan from Derby, the preferred combination.