On 28 December 2014, Rezaei joined Zob Ahan with an 18-month contract which would keep him until the end of 2015–16 season with the Isfahani side.

He made his debut for the club on 30 January 2015, in a 1–0 win against Persepolis in which he assisted Masoud Hassanzadeh's single goal of the game.
The following week he scored his first goal for the club in a 3–0 away victory against Rah Ahan.
On 16 April 2015, he scored a hat-trick in a 5–3 victory against Naft Tehran.
He also featured in the 2015 Hazfi Cup Final where Zob Ahan beat Naft Tehran 3–1 to win the title in which Rezaei scored Zob Ahan's third goal.

Rezaei made his first appearance of the 2015–16 season against Malavan on the opening day of the Persian Gulf Pro League season.
He scored his first goal of the season in 2–1 win against Persepolis.
On 29 May 2016, Rezaei won the Hazfi Cup for the second consecutive time, playing 111 minutes in the final as Zob Ahan defeated Esteghlal 5–4 in penalties.
On 28 December 2014, Rezaei joined Zob Ahan with an 18-month contract which would keep him until the end of 2015–16 season with the Isfahani side.
He made his debut for the club on 30 January 2015, in a 1–0 win against Persepolis in which he assisted Masoud Hassanzadeh's single goal of the game. The following week he scored his first goal for the club in a 3–0 away victory against Rah Ahan. On 16 April 2015, he scored a hat-trick in a 5–3 victory against Naft Tehran. He also featured in the 2015 Hazfi Cup Final where Zob Ahan beat Naft Tehran 3–1 to win the title in which Rezaei scored Zob Ahan's third goal.
Rezaei made his first appearance of the 2015–16 season against Malavan on the opening day of the Persian Gulf Pro League season. He scored his first goal of the season in 2–1 win against Persepolis. On 29 May 2016, Rezaei won the Hazfi Cup for the second consecutive time, playing 111 minutes in the final as Zob Ahan defeated Esteghlal 5–4 in penalties.
Kaveh Rezaei