Talking to reporters in the Iran football training session on Monday, Karimi said, “My contract with Schalke 04 has expired and I am free at the moment. But any club has not contacted me yet.”
“I am interested in returning to Persepolis but neither Persepolis nor any other team has not negotiated with me,” Karimi added.
The 33-year midfielder played for Schalke as a substitute in the Champions League quarterfinal first leg where the Germany representative beat title holder Inter Milan 5-2.
Former Persepolis midfielder has played 112 times for Iran football team and scored 36 goals.