Klefisch made his
3. Liga debut for
Viktoria Köln on 28 July 2019, coming on as a substitute in the 86th minute for
Mike Wunderlich in the 3–2 home win against
Chemnitzer FC. On 14 March 2022, Klefisch signed a three-year contract with
SC Paderborn, effective 1 July 2022. ==References==