Krasic moved to Juve last summer from CSKA Moscow.
"Personally I am satisfied with my first year at Juventus. I cannot help but improve," he said.
"I was missing that feeling of scoring a goal. My best goal was against Roma, but the performance of the whole side was really up to Juve standard.
"We can still achieve important objectives, as long as we maintain the right concentration. There are seven games left - all decisive, but all within our reach."