The Japan international's current deal, which he signed in 2020, is due to expire at the end of the season.
The 26-year-old has enjoyed an impressive season so far, both domestically and in the Champions League, and would be open to penning an extension.
"Of course, we are in talks about a contract extension. After my achievements, this is not a big surprise," Kamada told Sport1.
"Even if there could be talks with other clubs in the winter, I have no interest in an immediate departure."
Kamada has scored seven goals and provided four assists in 13 Bundesliga appearances this term, while also netting three goals in six outings in the Champions League.
The attacking midfielder also revealed that he is ambitious and would be delighted to secure a move to an elite club, should the right opportunity arise.
"I am much more demanding than you think when it comes to my dream clubs that I would join," he added.
"There have already been talks and contact with big clubs for two years."